Select the best engine oil for your excellent vehicle
It is not easy to select the best oil for high mileage chevy 350 from amongst so many options. When your car has served reliably for such a long time, you wouldn’t compromise on the quality of oil you equip it with. For the best maintenance of Chevy 350, it is recommended that you utilize 10W-30, 10W-40, or 5W-30 synthetic engine oils.
When the right engine oil is provided, the performance of your vehicle will boost admirably. We have brought you the best oils for high mileage Chevy 350.
The best oil for high mileage chevy 350
| Product | Oil type | Viscosity | Size | Check Today’s Price | |
| 1. | Royal Purple HMX Synthetic Engine Oil | Fully synthetic | 5W-30 | 1 Quart | Click Here |
| 2. | Mobil 1 High Mileage Synthetic Oil | Fully synthetic | 5W-30 | 1 Quart | Click Here |
| 3. | Mobil Super High Mileage Synthetic Oil | Fully synthetic | 5W-30 | 5 Quart | Click Here |
| 4. | Pennzoil High Mileage Synthetic Blend Engine Oil | Synthetic blend | 5W-30 | 5 Quart | Click Here |
| 5. | Castrol GTX High Mileage Synthetic Blend Engine Oil | Synthetic blend | 5W-30 | 5 Quart | Click Here |
| 6. | Amsoil Extended Life Synthetic Engine Oil | Fully synthetic | 10W-40 | 0.9 Quart | Click Here |
1. Royal Purple HMX Synthetic Engine Oil
This is easily the most recommended engine oil for the absolute best performance or high mileage Chevy 350 engines. Coming from a reputable brand, this engine oil is quite popular amongst old Chevy owners. Endowed with the latest ILSAC and API licenses, this oil provides the utmost reliable lubrication and reduces the friction between the moving metal parts of your engine.
This is owed to the presence of certainly enhanced additives in this oil. While providing excellent lubrication and smoothening the functioning of your engine, these additives also play a role in protecting the exhaust emissions equipment. The fuel mileage of your Chevy is splendidly improved.
Moreover, this oil is also equipped with unique and patented anti-wear technology that reduces the damage incurred by the engine due to the emission of harmful exhaust gases. Your engine is protected from much damage and wear.
Unlike most other high mileage engine oils, this one is also suitable for use with ethanol. The formation of white sludge is prevented because of the unique additive technology.
Pros
- This engine oil provides excellent lubrication
- It ensures the smooth functioning of your engine
- Your engine is protected from wear and tear
- This oil can also be utilized along with ethanol
- Critical parts of the engine will remain protected against corrosive agents
- Even the catalytic emission system is protected
- The fuel mileage of the engine is enhanced
Cons
- This engine oil is expensive
Verdict
This may be amongst the most expensive engine oils for high mileage Chevy 350, but it is definitely worth the price. Your vehicle will be rendered with relentless smoothness and excellent improvement in fuel mileage.
2. Mobil 1 High Mileage Synthetic Engine Oil
This high mileage synthetic engine oil is meant for high mileage vehicles and it is quite reliable in improving the performance of your vehicle. Even the durability of your engine is enhanced. Equipped with the best quality seal reconditioners, this oil ensures keep the functioning of your engine smooth and unfailing.
It is suitable for those who demand the best out of their engines. Also, there are very reliable additives that serve to enhance the stability of this engine oil.
Pros
- This is the absolute best engine oil for high mileage Chevy 350
- The excellent protection against wear prolongs the life of the engine
- The performance of the engine is reliably enhanced
- There are high-quality seal reconditioners in this engine oil
- This engine oil is suitable for both old and new engines
Cons
- The container is prone to leakage
Verdict
This synthetic engine oil will enhance the durability of your engine and improve fuel mileage. It works well for old as well as new engines.
3. Mobil 1 Super High Mileage Synthetic Engine Oil
This fully synthetic engine oil is very suitable for vehicles that toil hard and cover the longest distances. You will notice the difference in the smoothness and functionality of your engine right after the first oil change. Moreover, it has a longer service life and can last you for about 15,000 miles.
This engine oil also contains many useful additives that improve the lubrication of the moving parts of the vehicle. Some superior anti-wear agents reduce wear and tear and enhance the durability of your engine. The presence of antioxidants in this engine oil ensures that the build-up of harmful deteriorating agents is prevented.
Moreover, this engine oil has a very high viscosity index that allows its excellent utilization in the most extreme weather conditions. You wouldn’t encounter cold startups on harsh winter mornings and this oil will not disintegrate even at very high temperatures. The overheating of the engine is also prevented to an extent.
Pros
- The performance of your engine is enhanced
- This is a fully synthetic engine oil
- The viscosity of this engine oil stays stable in extreme temperature conditions
- It has excellent seal conditioners that prevent any leakage
- This oil has a longer service life
- Many useful detergents, antioxidants, rust inhibitors, and anti-wear agents are present in this oil
Cons
- This engine oil is relatively expensive
Verdict
This ultimate engine oil has a long service life and can last up to 15,000 miles. It also stays stable in extreme temperature conditions.
4. Pennzoil High Mileage Synthetic Blend Engine Oil
This high mileage synthetic engine oil by Pennzoil is known to enhance the performance of your vehicle and improve its durability. Meant for high mileage vehicles, this oil is very well suggested for a high mileage Chevy 350.
This oil is best known to reduce the occurrence of leakage in old and dry engines. The fuel efficiency of the engines is also enhanced. Considerably more strength is rendered to the engine so that it can cover great distances with ease. This is owed to the excellent seal conditioning agents and the patented advanced formula.
The special additives in this engine oil also serve to protect the engine against wear and tear. The build-up of harmful deposits is reduced and the life of the engine is prolonged. The lubrication rendered by this oil is extensive so that the functionality of your engine is rendered smooth.
Your vehicle is also protected from the effects of low-speed pre-ignition. It can also be utilized in modern turbocharged engines.
Pros
- This oil is very much suitable for high mileage vehicles
- It has an advanced formula that allows excellent performance
- There are seal conditioning agents to prevent leakage in old engines
- The durability of your engine is improved
- The fuel mileage of your engine is enhanced
- There are special additives to protect against wear and tear
- The engine is protected from a build-up of harmful deposits
- The effects of low-speed pre-ignition are reduced
Cons
- This oil is relatively expensive
Verdict
Pennzoil High Mileage Synthetic Blend engine oil contains special agents to enhance the performance and improve the durability of your engine.
5. Castrol GTX High Mileage Synthetic Blend Engine Oil
This fully synthetic engine oil by Castrol is known to boost the performance of high mileage engines. The formation of harmful sludge inside the engine is prevented. This oil is also equipped with the utmost superior oil-burnout protection.
There are excellent seal conditioners that prevent leakage inside the engine. The superior dispersant function ensures that the engine is extensively lubricated. There are additional additives in this engine oil that prolong the life of the engine and improve its performance. There are titanium friction modifiers that ensure adequate lubrication, smooth functioning, and an improvement in fuel mileage.
This also includes the special viscosity index modifiers that serve to keep the viscosity of your engine oil stable in extreme temperature conditions. This engine oil will not disintegrate when the environmental conditions become challenging. Moreover, it is API SN certified.
Pros
- This engine oil contains special modifiers that improve the performance of your vehicle
- The build-up of harmful deposits is prevented
- The dispersal system is superior
- There are seal conditioners to prevent leakage inside the engine
- There are extra additives to ensure the best in class performance
Cons
- This engine oil is prone to burn
Verdict
This high mileage engine oil will boost the performance of your Chevy 350 and deliver the smoothest performance.
6. Amsoil Extended Life Synthetic Engine Oil
This engine oil may be more expensive than the rest but its advanced formula is certainly worth the price. The special additives make it the best oil for older engines. The build-up of harmful deposits inside the engine is prevented and the life of the engine is prolonged. The durability of your high mileage engine is improved and it is also maintained at its best.
The thermal stability of this engine oil is also high. It can tolerate the variations in temperature without disintegrating. The functionality and the fuel mileage of the engine are improved.
Pros
- This unique engine oil is meant to improve the performance of old engines
- It prevents the deposition of harmful substances inside the engine
- There are unique additives that prevent the formation of sludge
- The durability of your engine is enhanced
- The cleanliness of the engine is improved
- The fuel mileage of your vehicle is boosted
Cons
- This engine oil is more expensive
Verdict
This engine oil contains special additives that reduce the build-up of harmful deposits. The cleanliness and durability of the engine are improved.
FAQs
1. How much oil does a Chevy 350 take?
Ans. Chevy 350 takes 5 Quarts of engine oil.
2. How often does a Chevy 350 require service?
Ans. Chevy 350 requires service after covering every 15000 miles.
3. How to change the oil in a Chevy 350?
Ans. You can get the best performance out of your Chevy 350 if you maintain it adequately. Proper maintenance requires a timely oil change.
Get the required equipment
- 5 quarts of engine oil
- Oil catch pan
- Funnel
- Oil filter
- Metric socket set of 10 mm and 14 mm
- ⅜” ratcheting wrench
Follow the essential steps
Step 1: heat your engine
The first step would be to heat your engine so that oil easily flows. Your Chevy 350 engine can be heated up by running the vehicle around for about ten minutes.
Step 2: Ensure that your vehicle is parked flat
Your vehicle must be parked on a flat surface for this procedure.
Step 3: Remove the drain plug
Remove the drain plug and let all the engine oil drain into an oil pan. This drainage will occur faster than you expect. Ensure that the oil drain pan is positioned right under the drain plug.
Step 4: remove the oil filter
It may not be easy to access and remove the oil filter in a Chevy 350, especially in a four-wheel-drive model. The oil filter is located above the front driveshaft and may not be easy to grab hold of. You can utilize an oil filter wrench for this purpose. Ensure that the oil drain pan is positioned below the site of the oil filter during its removal.
Step 5: reinstall the oil filter
You can then reinstall the new oil filter. Make sure that all the pieces are intact and the fitting is snug. Avoid damaged or withered portions so that there is no leakage of oil.
Step 6: fill the engine oil
You can then fill 5 quarts of engine oil in your vehicle with the help of a funnel. Add the oil in increments so that it doesn’t overflow and spill outside. Measure the oil level with the help of a dipstick.
Year by year, which oil type is suitable for Chevy 350?
The latest models of Chevy 350 like the L31, L05, L98, L83, and LT-9 utilize 5W-30 engine oil. The older models like L81, L82, and LT1 utilize 10W-40 or 10W-30 synthetic engine oils.
What oil type should you choose by mileage?
- 10W-30 and 10W-40 engine oils are most recommended for older high mileage Chevy 350s. For the newer high mileage models, 5W-30 engine oil is suggested.
- 5W-30 synthetic engine oils are also recommended for low mileage Chevy 350.
Conclusion
High mileage Chevy 350 utilizes 10W-30, 10W-40, or 5W-30 synthetic engine oils. We have brought you the best engine oils to boost the performance of your engine and make your Chevy 350 last long. Get yourself the secret to long-lasting high-performance Chevy engines and never stop riding.