1. A deposit on the interior of the engine caused by the engine oil breaking down under prolonged heat and use. Certain portions of the oil deposit themselves in hard coatings of varnish.
2. Residue formed when gasoline gets old and stale.
1. A deposit on the interior of the engine caused by the engine oil breaking down under prolonged heat and use. Certain portions of the oil deposit themselves in hard coatings of varnish.
2. Residue formed when gasoline gets old and stale.
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012