After driving 120miles of freeway with temps around 95F, My oil pressure dropped to 15psi at idle.. nothing out of the ordinary, but I wanted to check my oil level anyway. The oil level was high, but heres the unusual part.. the oil overflowed out of the cap where you put oil in.. there was a small pool where the cap was and it overflowed onto the rest of the parts of the engine.. I open the cap, and the oil was really hot so some oil vapor was coming out.. Now if I remember correctly, oil is not suppose to vaporize, and it is a bad sign correct? Is my oil burning? My oil is still where the H is, so I wonder if the dealer over filled my oil.. Engine techs / oil gurus please help. I'm running motul 8100 / and m1-110 filter. BTW the oil cap was hard as all hell to take off. I needed two hands and two socks. It wasn't put on losely. So I'm guessing that oil was really under high pressure to be pressured out.. I did no wot runs, mostly cruised at 80-90mph, some local, and passed a few cars but never went past 4500-5000rpms.. Hopefully the 07's are not having oil issues...

-james

 

i have no idea what to tell you other then the fact that aren't there warning labels that say do not open when engine is hot?

 

How do places change engine oil then? Just got to be careful.

 

That would be the radiator not the oil cap. Its no big deal to open the oil cap when the engine is hot.

 

As far as the smoke coming from the tube where you fill your oil i get that too if i pull it off after the car gets hot. The cap is always hard to take off even with two hands. thats all i can tell you. other than let the car sit for half an hour and check you dipstick about 3 times to get a reading then go from there.

 

is motul synthetic? your not supposed to use synthetic until 10K miles. thats what Nissan told me.