Top definition
An extremely heavy grade of motor oil, typically 50W-20. This oil is used in an automobile when it's on it's last legs and should be replaced. Engine butter does help for a while, but sooner or later the oil burnoff gets so bad hat you are spending as much money one oil as you are on gasoline!!!
I need a reign job on my car, it's smoking like a sonofabitch, i'm gonna pure some engine butter in there, maybe I can get another 3000 miles outof it if I'm lucky.
by Dwayne September 17, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug