i guess here is as good as anywhere to ask this:
i recently changed oil and filter, but not the pressures seem to be all over the place. before, on whatever sh!t the previous owner ran the car on, the oil pressure was just over 4 on start up, and just over 2 normally. but now, on startup its above 6, and in normal driving while warm will move from 2.5-4.5 depending on load.
i put that nulon "100% synthetic" 10w40 stuff in, and changed from an old, large oil filter to the nissan one, which is significantly smaller.
also, where is the oil pressure gauge? i tried to search for this but no luck
any insight would be great
thanks