Best oil additive for old engines – Top 8 of 2021

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We examined tons reviews, and put together a list of the top sellers. Check out the top oil additive for old engines below.


SaleNo. 1
Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz.
87 Reviews
Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz.
  • Prevents camshaft wear
  • Reduces piston scuffing
  • Increases engine life
  • Makes newer oils work in older engines
No. 2
Shine Armor Synthetic Engine Oil Treatment Additive Universally Compatible Performance Enhancing Reverses Engine Wear
  • Optimal Engine Performance. Our performance booster engine treatment reverses wear in bearings by building a carbon coating, providing...
  • Groundbreaking Formula Gear Oil. This revolutionary engine oil additive is made in the USA, and contains scientifically backed synthetic oil...
  • Universally Compatible. Our Engine Performance Booster oil treatment is compatible with all types of motor oil and can be used in both gas...
  • Quality Assured. We know you will be delighted with this ground-breaking engine additive technology. Our oil additive treatment is...
SaleNo. 3
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic...
172 Reviews
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic...
  • GROUNDBREAKING: Made in the USA – TriboTEX is a revolutionary engine oil additive. It contains synthetic nanoparticles developed with...
  • 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...
  • EFFICIENT: Our masterfully engineered engine treatment improves fuel consumption and reduces engine noise. It is time to improve your engine...
  • GUARANTEED QUALITY: We know you will be delighted with this ground-breaking technology. Our treatment comes with a 100% satisfaction...
No. 4
Resurs Fleet Oil Additive for Restoration and Protection of Old Diesel Petrol and LPG Engines (150 gr)
  • Reduces fuel consumption for up to 10%
  • Significantly prolongs the life of the engine, prevents expensive repairs
  • Reduces oil burning and smoking
  • Restores worn engine surfaces
  • Increases compression, restores lost power
No. 5
Petron Plus 12128 Hi-Performance Engine Oil Stabilzer Plus
91 Reviews
Petron Plus 12128 Hi-Performance Engine Oil Stabilzer Plus
  • Formulated for Car and light truck engines
  • Helps to reduce oil consumption
  • Helps to reduce engine ware
  • Helps to maintain oil pressure at high temperatures
  • Quiets noisy engine
No. 6
1oz Bottle of 100% Synthetic Oil For Lubricating Wrist Watches - Pocket Watches With 1.5 Inch Pharmaceutical Grade...
  • 100% Synthetic oil that will reduce friction between any moving surface.
  • Use this to replace petroleum based or spray lubricants.
  • Safe to use on plastics and painted surfaces.
  • Comes with a 60 day no questions asked return policy. If you are not 100% happy with your purchase I will refund your money
  • Comes with a medical grade 1.5inch long stainless steel needle tip applicator for precision oiling with no mess.
SaleNo. 7
LUCAS 10001 Heavy Duty Oil Stabilizer - 32 oz.
  • 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
No. 8
Lucas Oil 10063-PK12 Engine Break-In Oil Additive - TB Zinc Plus - 16 oz. - Pack of 12
  • Excellent for flat tappet camshafts during break-in or as an additive to any motor oil to prevent premature wear
  • Designed for race applications requiring additional extreme pressure additives
  • Protects camshaft lifters and valve train during break-in period of motor
  • Add one bottle with every oil change to increase the zinc content of your motor oil
  • Sold in case packs of 12