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Best Oil For High Mileage Chevy 350 (2024 Updated)

If you’re looking for an efficient and reliable way to prolong your Chevy 350 engine's lifespan, using a high-quality oil designed for high mileage engines could be an excellent option. However, with so many different oils available on the market, it can be challenging to know which one is right for you. In this article, we’ll explore the different factors you should consider before choosing a high mileage oil for your Chevy 350 engine.

One of the most crucial factors to consider when choosing an oil for your high mileage Chevy 350 is the oil's viscosity. Thicker oils may be better suited to older engines with more significant wear and tear, while lighter oils may provide better overall performance in newer engines. Additionally, it’s essential to consider the type of driving you do and the climate you live in, as this can affect the oil’s performance and lifespan.

So, how do you know which high mileage oil is best for your Chevy 350? What should you consider when shopping for oil, and how do you ensure you’re making the right choice? In this article, we’ll answer these questions and more, providing you with the information you need to make an informed decision about the best oil for your high mileage Chevy 350 engine.

10 Best Oil For High Mileage Chevy 350

# Product Image Product Name Product Notes Check Price
1
The product is ideal for high mileage vehicles due to its synthetic blend formula and MaxLife technology.
2
Ideal for high mileage engines requiring SAE 5W-30 oil with enhanced protection against wear and leaks.
3
Ideal for high mileage engines in cars, trucks, and SUVs that require 5W-30 viscosity.
4
It is ideal for high mileage automobiles and provides outstanding wear protection, improved fuel economy, and reduced oil consumption.
5
Ideal for high mileage engines in need of advanced wear protection and improved performance.
6
Ideal for high mileage vehicles over 75k miles, providing full synthetic motor oil with additional engine protection.
7
Ideal for high mileage vehicles requiring synthetic motor oil with additives that extend engine life and reduce wear.
8
The product is ideal for use as a motor oil to ensure the efficient performance of engines.
9
The product is ideal for programming and optimizing vehicle performance.
10
This product is ideal for boosting the performance of certain models of Chevy, Sonic, Trax, and Buick Encore vehicles.
The product is ideal for high mileage vehicles due to its synthetic blend formula and MaxLife technology.
Ideal for high mileage engines requiring SAE 5W-30 oil with enhanced protection against wear and leaks.
Ideal for high mileage engines in cars, trucks, and SUVs that require 5W-30 viscosity.
It is ideal for high mileage automobiles and provides outstanding wear protection, improved fuel economy, and reduced oil consumption.
Ideal for high mileage engines in need of advanced wear protection and improved performance.
Ideal for high mileage vehicles over 75k miles, providing full synthetic motor oil with additional engine protection.
Ideal for high mileage vehicles requiring synthetic motor oil with additives that extend engine life and reduce wear.
The product is ideal for use as a motor oil to ensure the efficient performance of engines.
The product is ideal for programming and optimizing vehicle performance.
This product is ideal for boosting the performance of certain models of Chevy, Sonic, Trax, and Buick Encore vehicles.

1. Valvoline High Mileage With Maxlife Technology Sae 5w-30 Synthetic Blend Motor Oil 5 Qt

Maxlife Technology is a specially formulated engine oil that provides 40% better wear protection than the industry standard. It prevents engine breakdown and enhances friction performance with advanced friction-fighting agents. This oil contains seal conditioners that refresh aging seals and prevent leaks. It also has added detergents that reduce sludge, deposits, corrosion, and rust, keeping motors clean inside. Maxlife Technology meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, and API SN. This American-made and formulated engine oil is designed to maximize the engine's life and improve its performance.

Maxlife Technology is a reliable engine oil that offers superior wear protection and reduces engine breakdown. It also contains seal conditioners that refresh aging seals and prevent leaks. This oil has added detergents that keep motors clean inside by reducing sludge, deposits, corrosion, and rust. Its advanced friction-fighting agents enhance friction performance, maximizing power. The oil meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, and API SN. This American-made and formulated engine oil is a great investment for anyone looking to improve their engine's lifespan and performance.

Pros

  • Provides 40% better wear protection than the industry standard
  • Contains seal conditioners that refresh aging seals and prevent leaks
  • Reduces sludge, deposits, corrosion, and rust with added detergents
  • Enhances friction performance with advanced friction-fighting agents
  • Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, and API SN
  • American-made and formulated for maximum engine life and performance

2. Valvoline High Mileage 150k With Maxlife Plus Technology Motor Oil Sae 5w-30 5 Qt

Maxlife Plus Technology with Moly Additive Protection is a high-quality engine oil that is designed to prevent engine breakdown. It is specially formulated to reduce oil consumption in older high mileage engines. This oil has a multi-dimensional anti-wear system that fights surface friction and exceeds protection standards. In addition, it contains seal conditioners that can refresh aging seals and prevent leaks. This oil meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN. It is made in America and formulated to maximize your engine's life and improve its performance.

Maxlife Plus Technology is a top-of-the-line engine oil that will keep your engine running smoothly for years to come. With its advanced formula, it can help prevent engine breakdown and reduce oil consumption in older engines. Its multi-dimensional anti-wear system provides excellent protection against surface friction, ensuring that your engine stays in top condition. The seal conditioners in this oil can help refresh aging seals and prevent leaks, which is essential for maintaining the longevity of your engine. This oil is made in America and meets or exceeds all major industry standards, so you can trust that it will deliver the performance and protection your engine needs.

Pros

  • Prevents engine breakdown
  • Reduces oil consumption in older high mileage engines
  • Multi-dimensional anti-wear system fights surface friction
  • Contains seal conditioners that refresh aging seals and prevent leaks
  • Meets or exceeds all major industry standards
  • Made in America

3. Mobil 1 High Mileage Full Synthetic Motor Oil 5w-30, 5 Quart

The Mobil 1 High Mileage full-synthetic motor oil 5W-30 is an excellent choice for engines with over 75,000 miles. With the ability to go up to 10,000 miles between oil changes, this motor oil is designed to provide superior engine performance, protection, and cleanliness. It uses the signature Triple Action Formula of Mobil 1 to deliver outstanding results.

This motor oil meets the ILSAC GF-6 standards and provides low-speed pre-ignition (LSPI) and timing chain wear protection while keeping the engine clean and helping improve fuel economy. It also provides excellent internal engine heat protection (up to 500 degrees F) and low-temperature protection (to -30 degrees F). This helps extend engine life by working to prevent damaging deposits and sludge buildup.

This motor oil provides an optimal solution for high-mileage engines and is designed to keep them running smoothly for a long time. With its advanced formula, it ensures that the engine stays protected and clean, which can reduce the risk of costly repairs down the road.

Pros

  • Designed for engines with over 75,000 miles
  • Can go up to 10,000 miles between oil changes
  • Meets ILSAC GF-6 standards to provide LSPI and timing chain wear protection
  • Helps improve fuel economy
  • Provides excellent internal engine heat and low-temperature protection
  • Helps extend engine life by preventing deposits and sludge buildup
  • Advanced formula ensures engine stays protected and clean

4. Castrol 03128c Edge High Mileage 5w-30 Advanced Full Synthetic Motor Oil, 5 Quart

The Titanium Strong Motor Oil is a specially formulated oil designed to maximize engine performance for vehicles with over 75,000 miles. It is an excellent choice for high mileage engines and helps to maintain both short and long term engine performance.

This oil is boosted with extra fluid titanium technology which increases oil film strength and reduces film breakdown. This helps to reduce leaks, oil burn off, and power-robbing deposits. The result is a smoother and more efficient engine that runs at its best.

The Titanium Strong Motor Oil is a premium quality motor oil that has been rigorously tested to ensure it meets or exceeds all industry standards. It is a reliable and trustworthy choice for anyone looking to get the most out of their high mileage engine.

Pros

  • Specially formulated for high mileage engines
  • Boosted with extra fluid titanium technology
  • Maximizes short and long term engine performance
  • Reduces leaks, oil burn off, and power-robbing deposits
  • Premium quality oil that meets or exceeds industry standards

5. Royal Purple Hmx High Mileage 5w30 Motor Oil 5 Qt Case Of 3 P/n 11749

The Royal Purple HMX High Mileage 5W30 Motor Oil is a premium quality synthetic oil that is designed specifically for high mileage engines. This oil is formulated with a blend of synthetic base oils and proprietary additive technologies that help to reduce wear and tear on engine components, improve fuel efficiency, and extend the life of the engine.

The Royal Purple HMX High Mileage 5W30 Motor Oil is suitable for use in gasoline engines that have accumulated over 75,000 miles. It is designed to provide superior protection and performance in high mileage engines that are prone to oil leaks, engine wear, and reduced fuel efficiency.

This motor oil is compatible with most conventional and synthetic oils, and it can be used in cars, trucks, SUVs, and other vehicles that require 5W30 motor oil. It is available in a case of 3 5-quart bottles, making it easy to stock up on the oil you need for your vehicle.

The Royal Purple HMX High Mileage 5W30 Motor Oil is a reliable and high-quality option for anyone with a high mileage engine. Its advanced formula provides superior protection and performance, helping to extend the life of your engine and keep your vehicle running smoothly for years to come.

Pros

  • Formulated specifically for high mileage engines
  • Reduces wear and tear on engine components
  • Improves fuel efficiency
  • Extends engine life
  • Compatible with most conventional and synthetic oils
  • Comes in a case of 3 5-quart bottles

Cons

  • – May be more expensive than other motor oils on the market

6. High Mileage Full Synthetic Motor Oil.

The Pennzoil Platinum High Mileage 5W-30 is a full synthetic engine oil made from natural gas using Pennzoil's patented gas-to-liquid PurePlus Technology. This engine oil is designed for vehicles with over 75,000 miles. With its unique formulation, this motor oil keeps pistons up to 45% cleaner than the toughest industry standard based on Sequence IIIH results. It provides better protection from friction based on Sequence IVA wear test using SAE 5W-30 compared to other leading high mileage motor oils. It is formulated to deliver less oil burn off than high mileage motor oils made from crude oil and helps protect engines from the loss of horsepower. It comes in a single 5-quart bottle with an ergonomic design for easy handling and pouring.

Pennzoil Platinum High Mileage 5W-30 provides faster low-temperature oil flow and protects in extreme heat. This motor oil is the first of its kind, made from natural gas using PurePlus Technology. This technology converts pure natural gas into high-quality, full-synthetic base oil that's crystal clear and contains fewer impurities than other traditional and synthetic motor oils. It is an excellent choice for high mileage engines that require a reliable and efficient engine oil.

In summary, Pennzoil Platinum High Mileage 5W-30 is a top-performing engine oil that offers superior protection and cleaning capabilities for high mileage engines. Its unique formulation, made from natural gas using PurePlus Technology, provides better engine protection and performance compared to other leading high mileage motor oils. It is a reliable choice for drivers who want to extend the life of their engines and keep them running smoothly.

Pros

  • Made from natural gas using PurePlus Technology, resulting in fewer impurities compared to traditional and synthetic motor oils
  • Designed for vehicles with over 75,000 miles, providing superior protection and cleaning capabilities for high mileage engines
  • Keeps pistons up to 45% cleaner than the toughest industry standard based on Sequence IIIH results
  • Provides better protection from friction based on Sequence IVA wear test using SAE 5W-30 compared to other leading high mileage motor oils
  • Formulated to deliver less oil burn off than high mileage motor oils made from crude oil, helping protect engines from the loss of horsepower
  • Provides faster low-temperature oil flow and protects in extreme heat

Cons

  • – May be more expensive compared to other high mileage motor oils in the market

7. Valvoline Full Synthetic High Mileage With Maxlife Technology Sae 5w-30 Motor Oil 5 Qt

The Enhanced Maxlife Technology in this engine oil prevents the breakdown of the engine in extreme conditions. It offers 50% better wear protection than the industry standard, ensuring that the engine lasts longer. The oil has premium seal conditioners that treat and prevent leaks, keeping the oil out of places where it shouldn’t be. The detergents in the oil have 25% extra defense against deposits, sludge, corrosion and rust, ensuring that the engine stays clean from the inside. The high-quality base oils and superior viscosity modifiers provide extreme temperature protection, making the oil suitable for use in various weather conditions.

This engine oil meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, and API SN. It is formulated and made in the USA to maximize the engine’s life and improve its performance. With this engine oil, customers can rest assured that their engine is protected against wear and tear, leaks, and deposits, ensuring that it runs smoothly and efficiently.

Overall, this engine oil is a reliable and effective solution for those who want to keep their engine in top condition. It provides superior protection, ensuring the engine runs smoothly and efficiently, while also prolonging its lifespan.

Pros

  • Enhanced Maxlife Technology provides 50% better wear protection than the industry standard
  • Premium seal conditioners treat and prevent leaks
  • 25% extra defense against deposits, sludge, corrosion, and rust
  • High-quality base oils and superior viscosity modifiers provide extreme temperature protection
  • Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, and API SN
  • Formulated and made in the USA to maximize engine life and improve performance

8. Valvoline Advanced Full Synthetic Sae 5w-30 Motor Oil 5 Qt

Get advanced protection for your engine with this exceptional motor oil. It is designed to provide enhanced protection against the four main causes of engine breakdowns, including wear, friction, heat, and deposits. With 40% better wear protection than the industry standard, as tested in the Sequence IVB engine test, you can trust this oil to keep your engine running smoothly for longer periods of time. Additionally, it provides 25% better deposit protection, thanks to its superior engine cleaning detergents, as tested in the GMOD engine test.

This motor oil offers exceptional high/low temperature protection, which means your engine will be well-protected no matter the weather conditions. It meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN, GM dexos 1 Gen 3. Made and formulated in the USA, this motor oil is designed to maximize your engine's life and improve its performance.

Whether you're looking for better wear and deposit protection or high/low temperature protection, this motor oil has you covered. With its superior formulation and excellent performance, you can trust this motor oil to keep your engine running smoothly and efficiently for many miles to come.

Pros

  • Provides advanced protection against the four main causes of engine breakdowns
  • Offers 40% better wear protection than the industry standard
  • Provides 25% better deposit protection with superior engine cleaning detergents
  • Offers exceptional high/low temperature protection for all weather conditions
  • Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN, GM dexos 1 Gen 3
  • Made and formulated in the USA
  • Maximizes engine life and improves performance

9. Accel 49505 Supertuner – Handheld Computer Programmer

Transform your vehicle's performance with the all-new tuning device. With average gains in excess of 30 HP/40 ft.-lbs. for gas and 80 HP/150 ft.-lbs. diesel, this device is designed to provide a significant boost to your engine's power and torque. The device is compatible with a wide range of vehicle models and can be easily installed in your car, giving you a quick and hassle-free upgrade.

The HD 2.8” color screen comes with an updated interface that makes modifications easier and faster. The increased memory and faster processor ensures improved tuning and faster updating, so you can get back on the road faster. The device also features active fuel management control, which helps you save on fuel costs and improve your vehicle's efficiency.

The device includes a performance test feature that allows you to measure your vehicle's acceleration and speed. This feature includes 0-60 and ¼ mile testing, giving you a comprehensive view of your vehicle's performance. The device is vehicle-specific, ensuring that it is tailored to meet the specific needs of your car.

Pros

  • Significantly improves engine power and torque
  • Easy to install and use
  • Features an HD 2.8” color screen with updated interface for easier and faster modifications
  • Increased memory and faster processor for improved tuning and faster updating
  • Active fuel management control helps save on fuel costs and improve efficiency
  • Includes performance test feature for measuring acceleration and speed

10. Turbocharged Buick & Chevy Engine Upgrade!

The Turbocharger is a high-quality replacement part that is compatible with GM (Chevy) Cruze 2011-2019, Sonic 2012-2020, Trax 2013-2021, and Buick Encore 2013-2021 with a 1.4L Gas VVT Turbocharged Ecotec LUV engine. It comes with a reference part number, which includes 781504-0001, 781504-0002, 781504-0004, 781504-0006, 781504-0007, 7815040001, 7815040002, 7815040004, 7815040006, 55565353, 55565354, and 667-203.

One of the key functions of this Turbocharger is that it has a sealing device installed between the compressor wheel and bearing support, which helps prevent oil leakage into the intake manifold and ultimately avoids engine burn oil. It is equipped with a wastegate and actuator, and the compressor and turbine housing is made of high-grade alloy to rapidly dissipate heat at an extreme rotating speed, which extends the service life of the product.

This Turbocharger comes with a 1-year (12 months) unlimited-mileage quality guarantee, providing you with peace of mind and ensuring that it meets your expectations.

Pros

  • Compatible with various GM (Chevy) and Buick models with 1.4L Gas VVT Turbocharged Ecotec LUV engine
  • Equipped with a wastegate and actuator for efficient operation
  • High-grade alloy housing for rapid heat dissipation at extreme rotating speed
  • Sealing device to prevent oil leakage into the intake manifold
  • Comes with 1-year unlimited-mileage quality guarantee

Best Oil For High Mileage Chevy 350 FAQs

Can synthetic oil be used in high mileage Chevy 350 engines?

Yes, synthetic oil can be used in high mileage Chevy 350 engines. In fact, synthetic oil is often recommended for high mileage engines as it offers better protection and performance than conventional oil. Synthetic oil has several advantages over conventional oil, including better resistance to breakdown, improved lubrication at high temperatures, and reduced engine wear. High mileage engines can benefit from these advantages, as they are more prone to wear and tear due to their age and usage. Synthetic oil is also less likely to form sludge and deposits, which can clog up the engine and reduce its performance. However, it is important to note that not all synthetic oils are created equal, and it is important to choose a high-quality synthetic oil that is specifically formulated for high mileage engines. Additionally, it is always recommended to consult the owner's manual or a qualified mechanic before changing the oil in any engine.

How do I know if my high mileage Chevy 350 engine needs a thicker or thinner oil?

Determining the right oil viscosity for your high mileage Chevy 350 engine is crucial to ensure its optimal performance and longevity. One way to know whether to use a thicker or thinner oil is to consider the engine's wear and tear. If the engine has high mileage, it's likely that the internal components have worn out over time, leading to increased clearances between parts. In this case, using a thicker oil can help reduce oil consumption and maintain oil pressure. However, if the engine is in good condition with no significant wear, using a thinner oil can improve fuel efficiency and provide better cold weather performance. Another factor to consider is the manufacturer's recommendations for oil viscosity based on the engine's specifications. Consulting the owner's manual or contacting a Chevy mechanic can provide valuable insights into the right oil viscosity for your high mileage Chevy 350 engine. Ultimately, the right oil viscosity depends on various factors, and it's best to consult an expert to make an informed decision.

How often should oil be changed in a high mileage Chevy 350?

The frequency of changing oil in a high mileage Chevy 350 depends on several factors. The first factor is the age of the engine, as well as its condition. Typically, high mileage engines tend to have more wear and tear, which means they require more frequent oil changes. A good rule of thumb is to change the oil every 3,000 to 5,000 miles. However, this can vary based on the driving conditions and habits of the driver.

If the vehicle is driven under harsh conditions, such as in dusty or dirty environments, the oil may need to be changed more frequently. Additionally, if the vehicle is used for towing or hauling heavy loads, the oil may also need to be changed more frequently.

It's important to consult the owner's manual and follow the manufacturer's recommendations. Regular oil changes are essential to maintaining a high mileage engine and ensuring it runs smoothly for years to come. Neglecting to change the oil on time can lead to engine damage and costly repairs.

What are the best oil additives for high mileage Chevy 350 engines?

When it comes to choosing the best oil additives for high mileage Chevy 350 engines, there are several options available in the market. However, before selecting any oil additive, it is essential to understand the specific needs of your engine.

One of the most popular oil additives for high mileage engines is the Lucas Oil Stabilizer. This product is specifically designed to reduce engine wear and tear, prevent oil breakdown and extend the life of the engine. It also helps to reduce oil consumption and improves fuel economy.

Another popular option is the Sea Foam Motor Treatment. This oil additive is a multi-functional product that not only cleans and lubricates the engine but also helps to reduce emissions and improve fuel efficiency. It is an excellent choice for older engines that require extra cleaning and maintenance.

Royal Purple HMX is another high-quality oil additive that is suitable for high mileage Chevy 350 engines. This product contains a unique blend of additives that help to reduce wear and tear, prevent engine deposits, and improve fuel economy. It also provides excellent protection for engines that have been neglected or poorly maintained.

Overall, the best oil additive for high mileage Chevy 350 engines will depend on the specific needs of your engine. It is always advisable to consult with a professional mechanic or seek advice from the manufacturer before choosing the best oil additive for your engine.

What type of oil is recommended for high mileage Chevy 350 engines?

For high mileage Chevy 350 engines, it is recommended to use a thicker viscosity oil such as 10W-30 or 10W-40. These oils contain additional additives that can help protect the engine from wear and tear, reduce oil consumption, and maintain proper oil pressure. High mileage oils are specifically designed for engines with over 75,000 miles and can also help reduce oil leaks and improve engine performance. It is important to note that every engine is different and oil recommendations may vary based on the specific needs of the engine. It is always best to consult the owner's manual or a trusted mechanic for the recommended oil type and viscosity for your specific vehicle. Regular oil changes and proper maintenance can also help prolong the life of a high mileage engine.

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