Engine & Oil Additives

58 engine & oil additives from Liqui Moly, Lubegard, Hot Shot's Secret and more.

Recommended Engine & Oil Additives

Star Brite

+Fuel system and injector cleaner for gasoline engines

+Contains P.E.A. and enzyme fuel system cleaner

+Helps address rough-running gasoline engines

No price recorded yet.

Triax

16 oz

+Suitable for both diesel and gasoline engines

+Made with 100% synthetic esters base

+Sixteen-ounce bottle holds a generous amount of product

No price recorded yet.

Liqui Moly

+Hybrid additive formula for engine oil treatment

+250 ml bottle size for single-use applications

No price recorded yet.

Liqui Moly

+Hydraulic valve oil additive for quieter valve operation

+300 ml bottle size for valve train treatment

No price recorded yet.

Liqui Moly

+Oil additive designed to reduce oil consumption

+300 ml bottle for topping up engine oil treatment

No price recorded yet.

Liqui Moly

+Oil treatment formulated for truck series engines

+500 ml bottle holds more treatment than smaller sizes

No price recorded yet.

Liqui Moly

+Valve cleaning additive for removing engine deposits

+150 ml bottle for targeted valve cleaning jobs

No price recorded yet.

Liqui Moly

+Oil leak stop additive for sealing minor engine leaks

+300 ml bottle for a single treatment

No price recorded yet.

Lubegard

+Engine oil protectant designed for turbocharged engines

+15 fl oz bottle for turbocharged engine treatment

No price recorded yet.

Lubegard

15 oz

+Engine oil protectant with Bio/Tech formulation

+15 oz bottle for engine oil treatment

No price recorded yet.

Lubegard

15 oz

+Universal ATF protectant for automatic transmission fluid

+15 oz bottle for transmission fluid treatment

No price recorded yet.

Lubegard

+Multi-purpose stop leak formula for several seal types

No price recorded yet.

Lucas Oil

+1 quart bottle for a small dose

No price recorded yet.

Motorkote

+Stop leak preventer for engine, transmission, and power steering

+8 fl oz single bottle

No price recorded yet.

Permatex

+Engine oil stop leak for gas, hybrid, and diesel engines

+12 fl oz bottle for a larger treatment

No price recorded yet.

Red Line

4 oz

+Friction modifier for limited-slip differentials

+Comes in a 4 ounce bottle

No price recorded yet.

Rev X

+Zinc ZDDP oil additive for engine oil

+Comes in a 2 fluid ounce container

No price recorded yet.

Rislone

16.9 oz

+Engine treatment for maximum performance

+Comes in a 16.9 ounce bottle

No price recorded yet.

Slick 50

15 oz

+Engine treatment formulated for high mileage engines

+Comes in a 15 ounce bottle

No price recorded yet.

Sukau

+Catalytic converter cleaner for exhaust system carbon removal

+Four pieces included in the pack

No price recorded yet.

Timeno

+Catalytic converter cleaner for removing pipe carbon

+Three pieces included in the pack

No price recorded yet.

Tracer

+Dye for gas engine oil to trace leaks

+Sold as a single pack

No price recorded yet.

XADO

+Engine oil additive for restoring worn engine surfaces

+8 ml bottle makes it a small dose per treatment

−Small 8 ml capacity means limited quantity per bottle

No price recorded yet.

ASL

No price recorded yet.

Dcifuu

No price recorded yet.

Liqui Moly

No price recorded yet.

Maxima

16 oz

No price recorded yet.

Maxima

16 oz

No price recorded yet.

Antifreezes & Coolants72 Brake Fluids64 Engine & Radiator Flushes71 Heavy Duty Oils & Fluids12 Motor Oils73 Power Steering Fluids57 Radiator Conditioners & Protectants25 Refrigerants52 Transmission Fluids66 Windshield Washer Fluids75 Winter Car Fluids65 Cooling System Additives79

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.

Engine & Oil Additives

Recommended Engine & Oil Additives

Related pages