In this best oil additives for cars product guide, we’ll help you make a more informed decision and select the product with the benefits you need.
In Hurry? Checkout Our Top Pick Of Best Oil Additives For Cars.
Our Top Pick
9.7/10 our score
Best Oil Additives For Cars
| Rank | Product Name | Score |
|---|---|---|
|
1  |
Bar's Leaks - 1000 Engine Repair - 16 oz |
9. 7 |
|
2  |
LUCAS 10001 Heavy Duty Oil Stabilizer - 32 oz. |
9. 5 |
|
3 |
Red Line (80204) Water Wetter - Coolant Additives - 12 Oz Bottle |
9. 1 |
|
4 |
Lucas Oil 10063 Engine Break in Oil Additive - TB Zinc Plus, 16 Ounce, Multi-Colored (LUC10063) |
8. 8 |
|
5 |
Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz. |
8. 6 |
|
6 |
BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas or Diesel Cars Trucks – 12 oz |
8. 2 |
|
7 |
Lucas Oil LUC10679 10679 10W-30 Petroleum Oil - 5 Quart Jug |
8. 0 |
|
8 |
Majic Multi-Purpose Long Neck Funnel for Car Oil, Gas Additives, Lubricants and Fluids, Blue |
7 .7 |
|
9 |
Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2) |
7. 4 |
|
10 |
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. 2 |
1. Bar's Leaks - 1000 Engine Repair - 16 oz
9.7/10 our score
- Increases oil pressure
- Reduces friction
- Helps clean internal parts
- Quiets noise
- Reduces oil consumption
2. LUCAS 10001 Heavy Duty Oil Stabilizer - 32 oz.
9.5/10 our score
- The product is 32oz hd oil stabilizer
- Easy to use, increases power and miles per gallon
- Made in USA, increase oil life at least 50 percent longer
3. Red Line (80204) Water Wetter - Coolant Additives - 12 Oz Bottle
9.1/10 our score
- Cutting edge technology - We at red line created this industry, pushing bubbles out of the way to ensure efficient & effective engine cooling
- Ultimate cooling performance - Coolant additive with a unique agent that lowers temperatures by reducing and eliminating bubbles or vapor barrier that form on hot metal surfaces
- Perform & protect - Waterwetter protects from rust & corrosion, allowing the use of straight water in racing or reduced antifreeze levels in warm climates
- Easy to use - Use one bottle for most cars & light trucks, treats 3 to 5 gallons. Larger cooling systems should use 2 bottles, Small cooling systems should use 1oz per quart
- Why red line - Established in 1979, red line products perform & protect better than any on the market. No compromises
4. Lucas Oil 10063 Engine Break in Oil Additive - TB Zinc Plus, 16 Ounce, Multi-Colored (LUC10063)
8.8/10 our score
- Affordable Solutions
- Not designed for passenger car use
- Exclusive blend of extreme pressure additives
- Excellent for flat tappet camshafts or as an additive
5. Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz.
8.6/10 our score
- Prevents camshaft wear
- Reduces piston scuffing
- Increases engine life
- Makes newer oils work in older engines
6. BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas or Diesel Cars Trucks – 12 oz
8.2/10 our score
- LONG LASTING ENGINE: BestLine uses its revolutionary formula to provide your vehicle with maximum engine life protection, proven to increase the life of your engine by 80%!
- VISIBLE BENEFITS: This engine treatment reduces the likelihood of low-speed, pre-ignition, reduces friction for improved fuel mileage, and offers protection against engine wear.
- 100% PURE SYNTHETIC: BestLine lubricant has been formulated with a full-synthetic base oil, designed specifically for longer drain intervals.
- UNIVERSALLY COMPATIBLE: This product can be used on a variety of new or old automobiles. BestLine is compatible with all types of motor oil and can be used in gas or diesel engines.
- TRUST BESTLINE: Our product is unique in that it is the only engine treatment with Diamond Nano-Lube for extreme boundary layer protection. If you are not satisfied with BestLine, we offer a 100% money back guarantee.
7. Lucas Oil LUC10679 10679 10W-30 Petroleum Oil - 5 Quart Jug
8/10 our score
- Lowers oil temperature
- Minimizes metal fatigue
- Improves pressure in worn engines
- Contains the high levels of zinc necessary to protect flat tappet cams, lifters and pushrods
8. Majic Multi-Purpose Long Neck Funnel for Car Oil, Gas Additives, Lubricants and Fluids, Blue
7.7/10 our score
- Extended filler neck opens gas tank trap door
- No wasteful spilling or pouring
- Durable plastic, easy to clean
- Use for car oil changes, gas additives, transmission fluids, power steering and more
- Perfect also for home or restaurant use
9. Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2)
7.4/10 our score
- Kit Includes (2) 16oz. Bottles of Marvel Mystery Oil additive
- Cleans and lubricates fuel injectors and carburetors
- Reduces and prevents varnish and gum build-up
- Prevents valve sticking and clatter
- Prevents oil breakdown caused by extreme temperatures
10. 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)
7.2/10 our score
- GROUNDBREAKING: Made in the USA – TriboTEX is a revolutionary engine oil additive. It contains synthetic nanoparticles developed with funding from the U.S. Department of Energy, NASA, & the National Science Foundation.
- QUIETER & SMOOTHER PERFORMANCE: Reverses wear in bearings by building a diamond-like carbon coating.
- UNIVERSAL: Compatible with all types of motor oil and can be used in gas or diesel engines. Use for both old and new cars. It is an excellent engine booster.
- EFFICIENT: Our masterfully engineered engine treatment improves fuel consumption and reduces engine noise. It is time to improve your engine and take your driving experience to a new level.
- GUARANTEED QUALITY: We know you will be delighted with this ground-breaking technology. Our treatment comes with a 100% satisfaction guarantee.