As vehicles rack up more and more miles, the engine and other parts start to experience wear and tear. To keep cars running properly, it’s important to use oil additives to protect the engine, which can improve its performance and help extend its life. One of the best oil additives for high mileage vehicles helps reduce engine friction and wear, while also preventing sludge buildup and other common problems. It’s important to choose the right product to ensure your engine is properly lubricated and running at its best.
Best Oil Additives For High Mileage
| Rank | Product Name | Score |
|---|---|---|
|
1
 |
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
|
9. 7
|
|
2
 |
STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B
|
9. 5
|
|
3
 |
FRAM HM3976A High Mileage Oil Filter
|
9. 1
|
|
4
 |
Lucas Oil High Mileage Fuel Treatment/24×1/5.25 Ounce
|
8. 8
|
|
5
 |
Lucas High Mileage Fuel Treatment (5.25 oz) – Case of 24
|
8. 6
|
|
6
 |
Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1
|
8. 2
|
|
7
 |
High Mileage Oil Stabilizer
|
8. 0
|
|
8
 |
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube – Makes High Mileage Cars Like New with a Synthetic Material (Treats One Regular Car, Truck, Tractor or Small Diesel)
|
7 .7
|
|
9
 |
Hy-Per Lube HPL201-3PK High Performance Oil Supplement – 32 oz, (Pack of 3)
|
7. 4
|
|
10
 |
LUCAS Oil 10118 High Mileage Oil Stabilizer (Pack of 2) (2)
|
7. 2
|
1. Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
I recently purchased the Slick 50 750002 Recharged High Mileage Engine Treatment, and I am extremely pleased with the results. I have a high mileage vehicle, and the engine was starting to sound a bit rough. After using this product, I was able to restore the smoother running engine that I had grown accustomed to. The product is easy to use: just pour it into the oil, and let it sit for a few minutes, and you’re good to go. I also noticed a slight improvement in my gas mileage as well. Overall, this is an excellent product that I would highly recommend to anyone with a high mileage vehicle.
- Reduces engine wear up to 50%
- Helps reduce friction, heat and wear on internal engine components
- Helps extend oil life up to 50%
- Helps reduce oil consumption and smoke
- Helps reduce engine noise and vibration
- Compatible with all petroleum and synthetic motor oils
- 15-ounce bottle with easy-pour spout
2. STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B
I recently used STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B and I was really satisfied with the results. After using the product, my car’s engine was running smoother and more efficiently. It also eliminated the oil leak I had been having. The instructions were easy to follow and the product worked very quickly. I would definitely recommend this product for anyone looking to reduce or stop an oil leak and improve engine performance. Overall, STP High Mileage Oil Treatment is an excellent product and I am very happy with my purchase.
- STP High Mileage Oil Treatment Formula for Cars & Trucks
- Helps stop leaks
- Bottle size: 15 Fl Oz
- Product Code: 15604B
3. FRAM HM3976A High Mileage Oil Filter
I recently purchased the FRAM HM3976A High Mileage Oil Filter and I am very happy with my purchase. The filter is made with a heavy-duty construction and the synthetic media helps capture more dirt and debris. It has a built-in anti-drain valve that prevents oil from leaking out and helps maximize engine protection. It also has a full-flow design that helps reduce oil pressure loss and helps improve engine performance. Installation was a breeze and I am confident that this filter will help keep my engine running smoothly for many miles to come.
- Premium blend of cellulose and synthetic media to provide high capacity and excellent filtration
- Designed with a precision coil spring and heavy-duty construction to ensure a tight seal
- Provides superior protection against deposit and sludge formation
- Highly efficient to extend oil life and performance
- Provides enhanced corrosion protection for longer filter life
4. Lucas Oil High Mileage Fuel Treatment/24×1/5.25 Ounce
I recently purchased the Lucas Oil High Mileage Fuel Treatment, and I am so pleased with the results! I have used a few other fuel treatments in the past but this one seems to be the most effective. It only takes a small amount to be added to my vehicle’s fuel tank and I can immediately notice an increase in the performance of my car. It definitely increases the mileage per gallon, which saves me money and is quite impressive. I also notice a smoother ride and better engine performance when using this treatment. I definitely recommend Lucas Oil High Mileage Fuel Treatment and will be purchasing it again in the future.
- Made with Lucas Oil’s unique blend of oil stabilizers and additives
- Keeps engines running smoother and extends engine life
- Reduces noise and wear, and eliminates dry starts
- Increases fuel economy and performance
- 24×1/5.25 Ounce bottle
5. Lucas High Mileage Fuel Treatment (5.25 oz) – Case of 24
I recently purchased the Lucas High Mileage Fuel Treatment (5.25 oz) – Case of 24 and I must say that it has been a great purchase. It has been helping my vehicle to run more efficiently, as well as providing a noticeable increase in performance and power. The fuel treatment helps to reduce emissions and extends the life of my engine. It also does a great job of cleaning the engine and preventing the buildup of sludge and other deposits. The 24-pack is great value for money and it is easy to use. Highly recommended!
- Formulated to reduce emissions, improve fuel economy and remove deposits
- Compatible with all grades of gasoline, diesel and ethanol blends
- High performance additive that cleans and lubricates fuel system components
- Add one 5.25 oz bottle to each tankful of fuel for maximum protection
- Case of 24 5.25 oz bottles
6. Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1
I recently purchased the Sea Foam High Mileage Motor Treatment HM16 and I’m really happy with the results. It’s easy to use, just add it to your oil or gas tank and you’re good to go. After using it, I noticed my car runs smoother and quieter. Additionally, it helps to reduce emissions, which is great for the environment. I have a high mileage car and this product helps it run better and extend its life. Highly recommend this product!
- 16 oz container
- Pack of 1
- Sea Foam High Mileage Motor Treatment HM16
- Designed to reduce wear, improve fuel economy and restore performance
- Safe and effective for use in fuel injection and carbureted motors
- Compatible with all oil types, gasoline and diesel
7. High Mileage Oil Stabilizer
I recently started using 7 High Mileage Oil Stabilizer and am really pleased with the results. I have an older car with high miles and this product has definitely helped to increase the lifespan of my engine. It’s easy to use and has improved the car’s performance significantly. The oil stays cleaner and runs more smoothly, which has improved my car’s fuel efficiency. I would definitely recommend 7 High Mileage Oil Stabilizer to anyone who wants to extend the life of their engine and improve its performance.
- Helps reduce engine wear and tear
- Increases engine performance and fuel economy
- Helps protect against thermal breakdown
- Helps reduce smoke and exhaust emissions
- Extends oil life
- Compatible with all conventional and synthetic oils
- Restores lost power, compression, and acceleration
8. TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube – Makes High Mileage Cars Like New with a Synthetic Material (Treats One Regular Car, Truck, Tractor or Small Diesel)
I recently purchased TriboTEX Nano Oil Additive Car Engine Treatment and have been very pleased with the results. After using the product, my car’s engine has never run so smoothly. The product is easy to use, simply add it to your regular engine lube and it works like a charm. I also noticed that after adding TriboTEX Nano Oil Additive to my engine, the car felt like it had more power and was running more efficiently. It’s great for high mileage cars and I would definitely recommend it to anyone looking for a reliable engine treatment.
- TriboTEX Nano Oil Additive Car Engine Treatment is designed to add to engine lube.
- It can make high mileage cars perform like new, using a synthetic material.
- The product is designed to treat one regular car, truck, tractor, or small diesel.
9. Hy-Per Lube HPL201-3PK High Performance Oil Supplement – 32 oz, (Pack of 3)
I recently purchased the Hy-Per Lube HPL201-3PK High Performance Oil Supplement – 32 oz, (Pack of 3) and the results have been great! The oil supplement is formulated to prevent engine wear, reduce friction, and protect against thermal breakdown. It is designed for use in four-stroke gasoline engines, so it works well for my vehicle. After using the oil supplement for several months, I have noticed a significant improvement in my engine’s performance. The engine runs smoother and responds faster when I accelerate. The oil also keeps my engine running cooler, which helps to maximize fuel efficiency. I would definitely recommend this product to anyone looking to improve the performance of their vehicle. It is a great value for the money and a great way to protect your engine.
- Pack of 3 bottles containing 32 oz each of Hy-Per Lube HPL201 High Performance Oil Supplement.
- Adds extra lubrication and protection to engine parts.
- Helps reduce friction and wear.
- Provides improved fuel economy.
- Improves engine power.
- Compatible with all types of gas and diesel engines.
- Formulated to reduce emissions.
- Safe for catalytic converters.
- Certified for use with conventional, semi-synthetic, and full synthetic motor oils.
10. LUCAS Oil 10118 High Mileage Oil Stabilizer (Pack of 2) (2)
I recently purchased the Lucas Oil 10118 High Mileage Oil Stabilizer and it has improved the performance in my vehicle immensely. It has helped reduce engine noise and improved my car’s fuel efficiency. The product is also easy to use and only takes a few minutes to add to the oil. It has been a great purchase and I would highly recommend this product to anyone looking to improve the performance of their vehicle.
- Designed to arrest engine wear and help improve lubrication in older engines.
- Helps treat excessive oil consumption, reduce oil consumption, reduce oil burning and stop engine smoking.
- Increased engine power and improved fuel economy.
- Helps protect against piston ring and bore polishing.
- Reduces oil consumption and extends oil life.
- Compatible with petroleum, semi-synthetic and synthetic motor oils.
- Reduces wear and friction.
- Reduces wear on valves, guides, cam and lifters.
- Contains detergents and dispersants for engine cleaning.
- Comes in a convenient two-pack for long-term use.
