michaelxx16

Does the engine oil filler cap(the cap on the pass side of the ls1 engine that you pour oil into) keep the oil prssure? Like if it was off would I have less oil pressure? And if I had low oil pressure would I lose hp? Or what would happen?

2001NBMZ28

A loose or missing oil cap can actually throw a code, as will an inproperly seated oil dip stick, etc.

michaelxx16

But no oil pressure loss?

Quickin

Oil pressure won't do a thing. You can take the valve cover off and oil pressure won't change.

Has nothing to do with oil pressure. Oil pressure is about internal engine parts' bearings, mainly. You can start your car and let it run with the cap off and nothing will happen, I do it all the time when I put oil in. You can even by breathers to put in place of your factory oil cap that allow better air flow through the oil fill opening.


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