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






















Amazon Customer –
I used this before treating my engine with Liqui Molly engine treamenlt. It is easy to use, seemed to do the job and is very inexpensive. I would use it again.
Lycan –
It does work but read the direction before use and if u have a leak before hand it will get worse.
Tony N Chapman –
I used this because my truck has 250000 miles on it and the oil pressure gauge went to nearly zero while pulling my boat. I knew the oil pressure switch has a fine mesh screen under it. I thought that sludge had stopped the switch from reading the oil pressure. I used this product per instructions and then changed the oil and filter. Once I fired the engine, the oil pressure was at 50 psi and settled at 40 psi after it got hot while driving.
lynarn –
Product went in and then out.Didnt notice a difference.
eric williams –
I have an old car and this works great let it run for about 15 to 20 minutes before getting an oil change and just watch the sludge come out
Cowboy –
Really liked this product and it worked exactly as advertised.
Shannon Ladely –
I needed to flush out my engine and Berryman is a great name to trust and you know what?? It works.
JEFFERY –
Seems to do the job.