Hi guys,
I just installed an Oil pressure gauge and i`m little confused now. It tells me that my oil pressure is about 60-70 PSI ( speed around 70 Mph ) and about 18 PSI on idle. I think it`s ether way to high or my gauge is not accurate.
Can anyone please tell me what my oil pressure should be on my MCS 2005 with CAI, pulley 16%, oil cooler and direct exhaust?
Thanks.

 

Spec is 3.6 psi at idle and 25-80 psi at 3K RPM at full operating temperature.

Your idle pressure does seem high, but these are hardly precision instruments. I doubt you have a problem.

- Mark

 

I got Sunpro CP8216 StyleLine. I heard they make good products, i guess I was wrong.. Any suggestions ?

 

It's probably a good product for what it is - a general cockpit instrument to monitor oil pressure and show if something is dramatically wrong. But not as something to show whether your oil pressure is slightly out of spec (which I doubt it is). And I also suspect the 3.6 psi idle spec is minimum and that higher is probably allowed. This is probably the pressure where the oil light comes on. Basically, your gauge is telling you that everything is just fine.

- Mark

 

I have an AutoMeter oil pressure gauge. Oil pressure can vary greatly depending on oil temperature. In the mornings I see 70+ psi depending on RPM. When warm at idle I see almost no pressure, hard to tell on my gauge but probably about 5 psi. The idle pressure is much higher when the oil is still cool. I usually use 5-40W oil.

 

i have an oil pressure gauge, made by Harbor freight. i see 60-65 psi in the morning, when the oil is cold, and i can get it up to 60 or so when i rev it good. at a warm idle, i get around 15-20 psi id say.... so, IMO, you seem ok. like others have said, oil Temp will be your Biggest factor in the pressure. i see you have an oil cooler. perhaps having cooler than "normal" oil is giving you more pressure. once my mini warms up, it cruises at about 50psi on the highway.

maybe your spot on then!

 

Thanks guys. Good news. One more thing what is your average oil temperature, just for the future references?

 

on a hot day, driving the **** out of it, ive never seen it above 210. avg, 160-200? hard to tell, my gauge has "funny" intervals... (goes from 10 to 50, 100, 160, 210, 250, 280).

i try to wait till its at least 100 degrees before i wail on her too.

 

Got it. I have one concern tho. Since i have the oil cooler and diverter my oil temperature should be lower then stock and it`s good for the summer, but I know that too low temperature is not good either, I have some worries about winter. Should I do anything with my cooling system to get it ready for the winter ?

 

Some 911s have thermostats for their oil coolers to avoid the issue you are describing. You could use a lower viscosity oil for winter like Mobil 1 0-40 or
block off the oil cooler in winter if you have severe winter conditions where you drive. On a record cold day in Michigan (about 50 degrees below zero) a few years back a large number of engines got scored crankshaft bearings due to no or low oil flow--but global warning has taken care of that problem!

 

Does an oil pressure gauge tell you anything significant, or it's just food for thought so you know everything is on.

Also how do you install a gauge, do you have to splice wires, and where?

 

It`s a good idea with lower viscosity oil. I would not count on global warming thought. I live in Boston, anything can happen here.

 

Michigan had almost no winter snows for the 2011/2012 season. Never seen that before! Almost no road salt--I could have driven my Porsche almost all winter. Boston--I lived there for a couple of years too--I would have liked it if
we weren't in school.