High revs low rpm, or high rpm low gear?

Asked by Sebastian Hagemann Nov 19, 2020 at 03:32 PM

Question type: Maintenance & Repair

Ive recently had a discussion about whether or not low rpm high gear is bad for
the engine. Ive been told that if a car does not reach high enough rpm it will
create a black coating on the pistons and therefore damage the engine. But is
this true? It seems odd to me.

40,025

beatupchevy answered 4 years ago

If the drive train of the vehicle is o.k. the tranny will down shift if more power is needed , higher rpm's aren't a bad thing for an engine . Peak horse power occurs at higher rpm's , I think if you poke around town like an old man at low rpm's in high gear for a decade then yes , crud will build up in the intake . You should open up the throttle on highway ramps it ain't going to hurt anything .

Mark helpful