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Engine & Radiator Flushes

31 engine & radiator flushes from Atlantis, BlueDevil Products, Liqui Moly and more.

Recommended Engine & Radiator Flushes

Atlantis

Engine

+Works with Kawasaki JS440, JS550 and 650SX models
+Universal 3/8 inch flush fitting for other engines
+Blue kit covers several Kawasaki jet ski models in one package
−Compatibility is limited to the listed Kawasaki models and fittings
No price recorded yet.
Atlantis

Engine

+Fits Yamaha 760, 1100, 1200 and J models
+Engine flush kit for cleaning the cooling system
+Covers several Yamaha models in a single kit
−Limited to the listed Yamaha model lines
No price recorded yet.
Autovic

Engine

+Includes a T-port and anodized aluminum adapter
+Designed for Ford Powerstroke VT365 oil cooler flushing
+6.0 liter capacity covers the oil cooler flush
−Designed specifically for the Ford Powerstroke VT365 system
No price recorded yet.
Berryman

Engine

+16-ounce bottle for a smaller engine oil flush
+Oil change flush cleans the engine between oil changes
+Compact size is easy to store in a garage
−16 ounces may be too little for larger engines
No price recorded yet.
Liqui Moly

Engine

+500 ml bottle for flushing engine oil passages
+Designed as an oil additive for engine flushing
+Engine flush formula targets sludge deposits inside the engine
−Small 500 ml volume may not suit larger engines
No price recorded yet.
Gunk

Engine

+Three-pack provides three 32 fl oz treatments
+32 fl oz bottles give substantial volume per treatment
+Engine flush designed for a short five-minute treatment
−Engine flush only, not for radiator or transmission systems
No price recorded yet.
Triax

Engine

+Oil-based formula for engine flushing
+Engine safe formula named on the product
+Removes carbon and sludge deposits, per the name
−Only 16 oz per bottle for larger engines
No price recorded yet.
XADO

Engine

+Targets carbon and engine sludge buildup
+Includes an anti-carbon effect
+Designed as a total flush product
−Small 250ml capacity for one treatment
No price recorded yet.
XADO

Engine

+Removes carbon and sludge from the engine
+Aims to restore oil performance
+250 ml bottle size
−Small 250 ml capacity for one treatment
No price recorded yet.
Durabasics

Engine

+Includes a high-pressure hose for flushing
+1 gallon of salt remover concentrate
+Made for marine engines
No price recorded yet.
Energy Release

Engine

+Motor oil additive designed as an engine flush and cleaner
+Comes in a 15 oz bottle for a single application
+Clear formula type for engine use
No price recorded yet.
Generic

Engine

+Works with gasoline and diesel vehicles
+500 ml bottle size
+Internal engine cleaner for removing deposits
No price recorded yet.
Engine Ice

Engine

+Two-pack kit covers multiple engine flush jobs
+Works as an engine flush and clean kit
+Includes motorcycle use in the product description
No price recorded yet.
Tuoksullxm

Engine

+6.0 liter capacity for a full oil cooler flush
+Includes a T port and aluminum anodized adapter
+Aluminum construction for the adapter
No price recorded yet.
FJC

Engine

+Holds 32 fl oz for flushing an air conditioning system
+Made as an A/C flush for engine air conditioning
−Limited to A/C system flushing rather than full engine cleaning
No price recorded yet.
Johnsen's

Engine

+Holds 32 oz of engine flush in one container
+Made as an engine flush for cleaning engine internals
−Requires a separate step to drain and refill oil after use
No price recorded yet.

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