oilhead

oilhead

A motorcycle engine that is partially or fully cooled by oil (as opposed to air). After switching from an airhead to an oilhead, I could never go back—this bike runs so much better all around!
Farlex Dictionary of Idioms.

oilhead

n. a drunkard; an alcoholic. Paul gave the oilhead a quarter, knowing it would be spent on cheap wine.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • get on (one's) bike
  • get on your bike
  • biker
  • on your bike
  • On your bike!
  • ride the roads
  • involuntary dismount
  • bike boys
References in periodicals archive
Planetoid performs with Das Muerte, Lenkadu and Oilhead beginning at 9 p.m.
Extraterrestrial
Combine that with a straightforward set of forks at the front - none of the groundbreaking paralevers at the front, as used on the Ks and oilhead Rs - and the first impression might be of a conventional, even conservative bike.
Tempting twin to make its showroom debut; MOTORING BIKES
Oilheads can be heard talking to thin air or muttering to themselves, apparently in the belief that private wishes so expressed will come true, even at the cost of other people's welfare and mild violation of the laws of physics.
Gerin Oil