12 best engine flushes
An engine flush is a chemical solution designed to clean the internal components of an automotive engine, primarily the oil passages and the oil pan. It is commonly used during an oil change to remove sludge, varnish, and other deposits that may have accumulated over time. The goal of an engine flush is to improve the overall efficiency of the engine, enhance lubrication, and extend the life of engine components.
Key points about engine flushes include:
Removal of Deposits: Engine flushes are formulated to break down and remove deposits such as sludge and varnish that can accumulate inside the engine. These deposits can hinder the flow of oil and reduce its effectiveness in lubricating engine parts.
Improved Lubrication: By cleaning out the oil passages, an engine flush can help ensure that oil can flow freely to all parts of the engine, providing better lubrication. This can be particularly beneficial in older engines or those with a history of inadequate maintenance.
Preventive Maintenance: Engine flushes are often used as a preventive maintenance measure. Regular use is believed by some to help prevent the build-up of deposits and maintain optimal engine performance.
Compatibility: It's essential to use an engine flush that is compatible with the type of oil and engine in your vehicle. Different formulations cater to specific engine types and oil compositions.
Application Process: Typically, an engine flush is added to the engine before an oil change. The engine is then run for a short period to allow the solution to circulate and dissolve deposits. Afterward, the old oil and contaminants are drained, and a new oil filter and fresh oil are added.
Caution: While engine flushes can be beneficial, it's essential to follow the manufacturer's recommendations and not exceed the recommended usage. Some engines or certain conditions may not be suitable for the use of engine flushes, so it's crucial to check the vehicle's manual and follow guidelines.
It's worth noting that opinions on the efficacy of engine flushes vary. Some argue that regular oil changes and high-quality engine oils are sufficient to maintain engine cleanliness. Others believe that occasional use of engine flushes can be beneficial, especially in older vehicles or those with a history of poor maintenance.
As with any automotive maintenance procedure, it's advisable to consult the vehicle's manual and seek professional advice if there are any concerns or uncertainties about using an engine flush.
Below you can find our editor's choice of the best engine flushes on the market
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Car Wash Sprayer and Boat Engine Flush Kit | Water Hose Mixer to Get Salt Away and Flusher for Boat Motor and Car Cleaning
Better Boat
Product description
Our Boat Soap & Flush Kit works double duty and can be used as a foam hose gun to wash your boat, car or truck, or to flush a boat motor with the built in flush attachments, or with separate flush muffs on an inboard and outboard motor flusher. This kit is also ideal as a part of a complete marine engine winterizing kit, it is crucial to remove salt from the exterior of your boat and flush your engine prior to storing in order to prevent damage. This kit also includes a premium quality fire hose nozzle making it an excellent value. We proudly stand behind the quality of all our products! We are a family owned American business committed to making premium quality products.
- CHOOSE BETWEEN WATER ONLY OR MIXTURE SETTINGS: This hose end sprayer mixer works as a foam sprayer to apply boat or car wash soap and salt removing agents, or set it to Water Only and it sprays clean water. This soap dispensing hose nozzle sprayer is compatible with a standard garden hose and works great as a spray foam gun , car wash foam gun and a part of a boat washdown kit. Use our soap dispenser conversion kit with a soap or salt removing solution to clean your dive and fishing gear.
- WORKS AS MOTOR FLUSH FOR I/O & OUTBOARD ENGINES: Can be used as a boat motor flusher to remove corrosive deposits and maintain optimal performance and useful life of your motor. Works as an outboard motor flush with boat muffs outboard or an inboard motor flusher. This is crucial to a complete boat winterize kit as it works as a boat winterization kit inboard and outboard motor winterizing kit. Works great with our Better Boat De-Salt or your favorite engine flush cleaner.
- KIT INCLUDES PREMIUM FIREHOSE NOZZLE: This spray foam gun kit comes with a high quality fireman style hose nozzle making it a great value. The durable rubber and stainless steel head attaches to our soap dispensor or a garden hose nozzle and twists to change the spray pattern. This hose sprayer with bottle works great as a boat wash down hose or car foam gun. We stand behind the quality of our products
- EXCEPTIONAL QUALITY: Better Boat offers a comprehensive line of premium quality boat detailing supplies. This foam gun garden hose attachment not only works great on your boat but can be used to clean your your car, truck or RV. Our products are made to strict, tested, trade-secret standards and you will find this hose end sprayer mixer bottle that doubles as an inboard and outboard engine flush is no exception. We offer the tools needed to make caring for your boat a breeze!
User questions & answers
| Question: | Do you sell a larger mixing cup for larger projects than the 4oz cup shown here |
| Answer: | Unfortunately this is the only size mixing cup we offer at this time. Sorry about that and thanks for your interest in Better Boat |
| Question: | How far does the nozzle spray |
| Answer: | The nozzle is adjustable and can go from a short fan to a very long spray. Thank you so much for your interest in Better Boat. |
| Question: | What is the application ratio of soap to water? And is it adjustable |
| Answer: | The ratio is 4 gallons of water to the oz of solution. Hope that helps. It is not adjustable but you are able to turn to just water while you are doing it so you could slow it down further. Hope that helps and thanks for your interest in Better Boat. |
| Question: | I'm only looking for the rubber gasket for the mixing cup. My son is really good at losing it. Do you guys sell them individually |
| Answer: | Unfortunately we don't have the gasket by itself for sale. Sorry about that and thanks for your interest in Better Boat. |
Liqui Moly 2037 Pro-Line Engine Flush Pack of 6 (6 x 500 Milliliter Cans)
Liqui Moly
Product description
Liquid Moly's Pro Line Engine Flush is a highly effective detergent additives in Engine Flush clean interior engine before oil change. Removes Deposits, residues from all 4-stroke gasoline engines and diesel engines. Dissolves sludge and lacquer and isolates solid particles and liquid contaminants. Improves the combustion process and restores full engine performance. Prevents corrosion of unprotected metal surfaces. Recovers oil lubricating properties. Add to engine oil before engine oil change. Let engine run on idle speed for 10 minutes. Drain oil, change oil filter and refill with fresh Liquid Moly engine oil. Fully compatible with all commercially available engine oils.
- 6 x 500 Milliliter Cans
- Easy way to clean and flush the oil systems of gasoline and diesel engines
- Gentle and rapid cleaning
- Neutral to seals and other materials installed in the engine
- Compatible with catalytic converters
User questions & answers
| Question: | would this be food for bad lifer noise |
| Answer: | Cant hurt, got 10 psi oil pressure back that I lost, if it dont work try sea foam, I heard it does work on lifters. Good luck! |
Berryman 1216 Oil Change Flush, 16-Ounce
Product description
Quickly and safely cleans harmful sludge and other deposits in the crankcase of All gasoline and Diesel engines without the use of aggressive solvents. Frees sticky valves and lifters for quieter operation, opens restricted oil passages to improve overall oil circulation, removes water for enhanced corrosion resistance, and frees sticky piston rings for reduced oil consumption and blow-by. Compatible with All single-grade and multi-grade conventional and synthetic gasoline and Diesel engine oils. Treats 3-6 Quarts of oil.
- Quickly and safely cleans harmful sludge and other deposits in the crankcase immediately before an oil and filter change
- Safe for Diesel engines
- Detergents and dispersing gently clean and suspend sludge deposits. Opens restricted oil passages to improve overall oil circulation.
- Does not contain aggressive solvents (Acetone, toluene, xylene)
- Removes water for enhanced corrosion resistance
User questions & answers
| Question: | Is it save for gas turbo engines |
| Answer: | Yes it works in all gas and diesel engines |
| Question: | how long do you leave this product in before removeing it |
| Answer: | Add product then Start the engine and allow it to idle until the oil is at operating temperature. (Since you're trying to address a known issue, you might wait as long as 15-20 minutes.) Turn off the ignition and allow oil to cool sufficiently for safe handling. Drain and replace engine oil and filter. |
Product features
Berryman Oil Change Flush
Quickly and safely cleans harmful sludge and other deposits in the crankcase of all gasoline and diesel engines without the use of aggressive solvents. Frees sticky valves and lifters for quieter operation, opens restricted oil passages to improve overall oil circulation, removes water for enhanced corrosion resistance, and frees sticky piston rings for reduced oil consumption and blow-by. Compatible with all single-grade and multi-grade conventional and synthetic gasoline and diesel engine oils. Treats 3-6 quarts of oil.
Directions:
Add one 16-oz bottle of Oil Change Flush to 3-6 qts of engine oil immediately before an oil change. Start engine and allow to idle until oil is at operating temperature. Turn off ignition and allow oil to cool sufficiently for safe handling. Drain and replace engine oil and filter. Always recycle used oil and filter. For maximum engine oil life and performance, use Berryman Engine Oil Extender (part #1210) between oil changes.
Note: On vehicles with excessive engine deposits, such as those with high mileage, sporadic maintenance, or lengthy oil change intervals, remove and clean oil pan and oil screen before replacing engine oil and filter.
STP High Mileage Engine Flush Formula, Oil Cleaning for Cars & Truck, Bottles, 15 Fl Oz, 18566
Product description
STP Super Concentrated High Mileage Engine Flush cleans and prepares your vehicle's engine for new oil.
- Scientifically engineered to improve the oil drain for vehicles over 75K Miles
- Super concentrated cleaning agents actively clean deposits in the engine
- Helps Reduce Sludge and Varnish on Cylinder Heads
- Helps dissolve Engine Deposits
- Will not harm seals - safe to use every oil change when used as directed
User questions & answers
| Question: | directions on use |
| Answer: | On the bottle. |
| Question: | is there a risk of affecting the valve seals or something in the engine? or smoke from the exhaust? thanks |
| Answer: | Don’t think so |
| Question: | how do you use this product? like you change the oil then put it through and let it drain out the oil pan |
| Answer: | Add it to the existing oil, idle your engine for 5-20 minutes then change your oil and filter. It gets a lot of the sludge out. I need to do it again. Instructions are on the bottle |
Camco Boat Dual Water Feed Motor Flusher - Flushes Contaminates Out of Your Boat Engine | Dual Input Design | Connects to Standard Water Hoses |Great for Winterization - (50141)
Product description
The Camco Dual Flow Motor Flusher helps properly maintain your boat's engine by flushing out contaminates. It allows you to run fresh water through your engine's cooling system. Simply connect the flusher to a standard garden hose to clear out salt and mineral build-up that could jeopardize your engine's ability to operate to its fullest capacity. The flusher's dual input design allows enhanced flow through the engine. Great for boat winterization. It is compatible with most outboards and sterndrives.
- Flushes contaminates out of the engine
- Dual input design enables better flow through the engine
- Connects to any standard garden hose
- Compatible with most outboards and sterndrives
- Great for boat winterization
User questions & answers
| Question: | Will this work on a Merc |
| Answer: | It should be universal. I’ve personally got a Yamaha 150. But it slides right on. |
| Question: | Does this work on smaller outboards like a 50HP yamaha |
| Answer: | Should work, might not feel as tightly as a bigger outdrive but none of them are watertight II begin with they're going to leak a little but just as long as it's pumping water into the engine you're good |
| Question: | Will it work on 40hp mercury |
| Answer: | Works on my Volvo Penta SX,that's all I can say |
| Question: | what are the dimensions from fork end to water inlet |
| Answer: | From the U to the water outlet holes in the middle of the cups is 8 3/4" |
attwood Attwood 9372-2 Universal Motor Flusher, Flushes Engine Cooling System, Round with Plastic Body, Attach to Garden Hose, One Size
Product description
This Attwood Universal Motor Flusher quickly and easily flushes away materials such as salt, sand, silt, and alkali to prevent clogging and corrosion of an engine’s cooling system. A self-adjusting clamping yoke fits on most domestic or imported inboard/outboards and outboards. Attach a garden hose and the molded cups deliver fresh water to flush the cooling system through the side intakes on the lower unit. This unit is round with a reinforced polypropylene body. Note: Avoid damaging the engine by not using full flow from the hose. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.
- Quickly and easily flushes engine’s cooling system
- Flushes away materials such as salt, sand, silt, and alkali
- Prevents clogging and corrosion
- Self-adjusting clamping yoke fits on most domestic or imported inboard/outboards and outboards
- Attach garden hose and the molded cups deliver fresh water to flush cooling system through the side intakes on lower unit
- Round with a reinforced polypropylene body
User questions & answers
| Question: | Will these muffs work on a 2006 Mercury |
| Answer: | It all depends on where the water inlet is for the water pump. Most are on the sides of the lower unit, but some are located in a different area. This works on pretty much any motor where the inlets are on the sides. It clamps over them and provides water flow to the water pump. |
| Question: | Will this work on a year 2001 volvo penta outdrive |
| Answer: | Selfadjusting clamping yoke fits most domestic or imported I/O’s and outboards. Molded cups deliver fresh water from a garden hose to flush |
| Question: | In what country is this motor flusher manufactured |
| Answer: | china. best flusher i have ever bought. highly rate |
| Question: | Will they fit small 6 hp outboard |
| Answer: | Self adjusting clamping yoke fits most domestic or imported I/O’s and outboards. |
Silverlite 4",17W,5000K,1300LM,120V,CRI80,Dimmable LED Light Engine Retrofit Kit for Ceiling Flush Light,Ceiling Fan Light,Pendant,Lantern,Garden light
Silverlite
Product description
Notice: The size show on box label/sticker is PCB size, not the overall size.
Recommended Dimmers
-Lutron:DV-600P
-Lutron:DVELV-300
-Lutron:SELV-300
-Leviton:IPL-06
Easy Installation
Step1. Cut off the power supply.
Step2. Remove the lamp socket(s) and BALLAST.
Step3. Choose one installation method suitable for your fixture. Dome(not for 3 inch light engine), junction-box or surface mounting.
Step4. Connect wires, white to white, black to black and ground to ground.
Much more detailed installation information could be found on user manual comes with each item.
Long Lifespan
Silverlite LED light engine is rated at 40,000 hours. It is 4x longer than CFLs(10,000hours) and much longer than incandescents, meaning far fewer service cycles and far fewer replacement bulbs.
Excellent Heat Management
Backed with a tough steel heat sink, Silverlite LED light engine has better performance in heat dissipation, which allows delivers longer life than other LED module. Rugged design bulid to last.
5-year Limited Warranty
Silverlite LED light engine backed up a 5-year limited warranty from the purchase day, guaranteeing the need for minimal servies or replacements.
Totally Flicker Free
Flciker Rate <30% @ dim to 20% lumen output
UL Classified
Silverlite LED light engine are UL approved for use in luminaires and suitable for damp location where not in direct contact with weather and water, can be used in bathroom.
Specification:
-Size: Overall 5.39", PCB diameter 4"
-Power: 17watt
-Output:
2x40watt incandescent
2x11watt CFL
1x20watt T9 circline CFL
-Voltage: 120V
-Control: Triac Dimming
-Brightness: 1300lumens
-Color Temperature: Cool White(5000K)
-CRI: 80+
-Operating Temperature: 0°F to 104°F.
- 2x40watt incandescent, 2x11watt CFL or 20watt T9 circline equivalent while only 17watt used, at least 70% energy saving, drastically reduce your electricity bill
- With the latest integral driver-on-board(DOB) and 120V AC drive technology, no extra external AC-DC driver needed, high-end solution to retrofit your fancy ceiling lights
- Down to 5% triac dimming capacities, totally flicker free, much even lights and no more ugly light spot, 80+ CRI(Color Rendering Index), multiple and easy installation
- 40,000 hours lifespan, it is 4x longer than CFLs(10,000hours). 5 years limited warranty, UL approved for use in luminaires and suitable for damp location, lowest maintenance, risk-free purchase
- Application: ceiling fan light, pandent, ceiling light, lantern light, garden light and other fixtures which have a plate to attach this retrofit kit. Check the inner diameter of your fixture before place an order
User questions & answers
| Question: | I will need the long hollow center bolt with a few nuts/washers to retrofit my ceiling fan. Does this come with that? If no, where can i get that |
| Answer: | Yes it does come with the hollow bolt, and the threaded plate. I'm sorry I cant tell you how long it was, since I used this light for another application. |
| Question: | Does this require wiring it in or does the kit come with a bulb socket (like a true retrofit kit |
| Answer: | You replace the old socket with this. Yes you would need to wire in place. |
| Question: | Can I use a drill to enlarge the center hole? My ceiling fun center rod (nipple?) is .5 in in diameter |
| Answer: | if you check the dimensional drawing for the fixture the center hole is .51 this = 10/1000 larger then 1/2 " But I have seen many lite fixtures and fans that have this setup is kinda a universal thing the nipple is 1/8 NPS that is what is in the kit. your nipple is .5 which is close in size to the 1/8 NPS I can't say drill the hole out that I would is double check everything it may be easier to just buy a reducer bushing Mr. Teddy B answered on February 5, 2018 |
| Question: | I know the 7" assembly is 8.39" corner 2 corner. I would trim the backing plate to match the light. Is the diameter of the 7" light pcb exactly |
| Answer: | the dim. is 7.40 (just under 7 1/2" |
XADO Engine Oil System Cleaner with Anti-Carbon Effect - Removes Contamination & Engine Sludge - ATOMEX Total Flush Revitalizant (Bottle, 250ml)
- Safely and carefully cleans engine oil system from all kinds of contaminations, ensures its technical purity
- Removes carbon and restores mobility of stuck piston rings.
- Universal for all engine types including turbo-supercharged ones.
- Due to revitalizant provides creation of engine protection reserve.
- Cleans crankcase ventilation system. Eliminates effect of hydraulic lash adjusters sealing
User questions & answers
| Question: | How often should you use this |
| Answer: | Should not be used at all. Caused my engine to seize. |
| Question: | Can it be used with synthetic oil |
| Answer: | Should not be used at all. Caused my engine to seize. |
| Question: | How far can you drive it with the flush? Is 300 miles too many |
| Answer: | Dear Customer, Thank you for your question. We value your business. It is recommended to idle the engine for 10-15 minutes or to get better results you may drive for about 12mi. If your engine has severe contamination - you could try going for 90-120mi with it, but no more. This is a very powerful solution which will clean everything thoroughly. Best Regards, XADO TECH |
| Question: | My engine seized after adding this to my truck engine. Drove 10 miles. Has this happened to anyone else |
| Answer: | I have not tried it yet. It all depends on the age of the engine, prior problem before adding this and also what made you use this? It also depends on the type, make and model of the car. I wanted to do plenty of research before using it in my 2004 jeep grand Cherokee 4.7l engine. I just did sea foam treatment and did the oil change .. after 100 miles. I am going to do another oil change with this stuff. I heard if the engine is badly clogged up and dirty from the inside then you want to do it slowly.. plenty of times with little portions instead of using it all at once because this stuff is powerful. Maybe some of the dirty elements got stuck to the running system.. and it may need mechanical cleaning. |
Product features
Total Flush
Atomex Total Flush is an effective complex solution for care of the engine oil system. REVITALIZANT and a unique combination of special detergent and dispersal components provide cleaning of the oil system up to the level of technical cleanliness before changing oil, anti-carbon treatment and mobility restoration of the piston rings as well as creating of anti-wear protection reserve for friction parts of the engine.
Complex Oil Treatment
Anti-smoke Additive with Revitalizant. Oil pressure restorer. It is a full synthetic product that represented by the polymer thickener which increases oil viscosity. Contains revitalizant. The product is compatible with all types of motor oils. Safe for turbocharging assemblies. Applied both for gasoline and diesel engines.
Stop Leak Engine
A highly efficient product of the latest generation for elimination of oil system leakages in engines of all types. Contains special components that restore the elasticity of sealing materials resulting in oil leakage elimination. Eliminates the need for expensive repair. The sealing effect is achieved after 400-600 mi of run.
Stop Leak Radiator
A product of the latest generation designed to seal leakages in the cooling system. Completely eliminates leakage, reliably and permanently seals micro cracks and minor damages (up to 0.9 mm) in the pipelines and joints. Eliminates gaping of the pump gasket, leakages of cylinder block gaskets etc.
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