whats up y'all.. i have an 08 5AT and ive had problems with high oil pressure before but the guys here pretty much broke it down saying that it was fine.. around june or so this year i was running at about 50-80 psi oil pressure at normal driving (not WOT) took it to nissan and tehy said that they did not pull any codes so they really couldnt fix anything. now starting this monday, temp around here in JAX FL came down to about 45-55 and today went back to mid 80's.. since the temp dropped, my oil pressure has been pegging out, ive been warming it up for about 5-10 minutes before driving but it still runs high at normal driving speeds. i use the manual mode alot and i shift at around 2500-3000 rpms, thats about where it pegs out. oh and at startup my car idles at 1400-1500 rpms and pressure would be at 115 sometimes all the way to 120. ive been "babying" my car since ive noticed it. it just doesnt feel like how my car used to be.. so pls, if anyone has any inputs and if there is anyone that is going thru the same dilemma.. pls help... i really want this badboy to last a while.. never missed an oilchange, or anything.. nissan has been doing my oil changes since its free but should i doubt that also.. pls people hit me up.... thank you so much

 

Whats the idle PSI after say 30 minutes of driving? If its around 30 don't worry about it.

On a cold start and even a few mins after it's very easy to get it to 120, which prob isn't even a big deal but I definitely don't go WOT till I've been running it a good 15 mins or so.

I'm sure it's fine.

 

after 30 minutes, it stays between 60 and 90 and when i bring rpms up to 4500 then it goes up to about 110-115

 

Search oil pressure sensor. That will fix it.

 

I have the EXACT same problem. Nissan changed the oil pressure sensor today, it's still doing it.

Cold Start - 120PSI at Idle, which I agree is fine, drops down to about 45-50PSI once warmed up.
Warmed up - 1-4th gear never exceeding 4k RPM the PSI is 115-120+. I've even seen it go past 120, to probably 130-140 if there were numbers there.
Warmed up Neutral Rev - Quick blips put me up to 120PSI, never exceeding 4k RPMS again.

Not sure what the deal is. Changed the oil from Mobil 1 10W30 Regular to Mobil 1 5W30 Synthetic w/ new nissan oem filter and it started doing it.

 

I'm convinced now that they put this gauge in the car to mess with your head. This is the exact reason why the 370 has an oil temp as opposed to an oil pressure, it doesn't move so much and doesn't freak people out. You only have to worry if you have low pressure. The car is meant to operate in -40 degree and 120 degree weather, both of which will drastically change your pressure reading. Would you ever know the difference if the car didn't have one? Of course not... so change it out, but before you do that, run it for 15 minutes, then have some rev happy fun with it for about 5 minutes, i guarantee once the oil has risen 20 or 30 more degrees it will be back to where you expect it to be.
FTR my oil pressure when totally warmed up regular driving in 45 degree weather is a hair over 30psi, after a race or a few laps around the track it's a hair over 15 but quickly returns. In the summer when it's 110 plus out, my 75MPH cruising speed pressure is just under 50 psi, while it's hard to stay under that much when it's cold out. Relax and drive bro.

 

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