I'm curious because when I first start the engine, the oil pressure gauge reads just over 40, but as the engine warms up, it slowly drops until it sort of just sits just above 0. It fluctuates a bit with engine RPMs, which I think is normal.
I don't think that dropping to near zero when hot is normal though, is it? Maybe if it's idling after a long drive on a hot day I guess; the owner's guide (as I recall) does mention that as a situation where the oil pressure gauge might briefly drop that low, but this is consistent regardless of outdoor temps.
A mechanic (who I no longer do business with for various unsavory reasons) said it was the sender unit failing, but is that true? If so, is it a relatively easy and inexpensive fix?
c
I don't think that dropping to near zero when hot is normal though, is it? Maybe if it's idling after a long drive on a hot day I guess; the owner's guide (as I recall) does mention that as a situation where the oil pressure gauge might briefly drop that low, but this is consistent regardless of outdoor temps.
A mechanic (who I no longer do business with for various unsavory reasons) said it was the sender unit failing, but is that true? If so, is it a relatively easy and inexpensive fix?
c