My 06 997 base model consistently runs with an oil temp (by the gauge) of 235 degrees. Ambient temp today was 85 degrees. I think this is too hot.. Normal driving, RPMs less than 3900. 6 speed. When parking in my garage you can hear the sheet metal in the exhaust system cracking from the temp. Coolant levels is ok, oil level is okay. Water temp is always 175. Hasn't been back to the dealer. 750 miles on the car.

Opinions??

TIA

 

Exhasut System contracting and expanding from heat is normal on any car.

Why do you think your car is running too hot?

 

It's fine. Keep in mind that if you were having a problem a warning light would be on.

In fact temps above the boiling point of water help keep water vapor out of your oil. And the Mobil-1 can easily handle these temperatures.

I think you may have found your cars normal base line temps. You can worry if they are ever substantially different from what you're now seeing.

 

Oil temp shows 235
water temp 175

Thats 60 degrees difference. I called the great techs at my Porsche dealer and the tech didn't know the car had an oil temp gauge. That was a confidence building statement!
I've never had a car with an oil temp gauge before..I'd probably be better off without it. Thanks for the comments.

 

One is on the inside of the engine and one is on the outside.

996s never had oil temp which is why your tech looks stupid. 175 is what I always got for water temp in my 996.

Enjoy your car. Mine was offloaded from the ship yesterday. Looks like it should be here sometime next week. I'm darned curious to see what my temps are here in Florida. LOL, I bet they're 175 and 235.

 

175 and 235 here in 85 degree North Carolina

 

235 sounds high to me. Mine is at about 205 - 210. Typically closer to the former. It's not that the engine can't take it. But why is the engine generating this extra heat? Increased friction on the lubricated parts?

After the engine is turned off I agree that sounds of contracting metal in the exhaust system as it cools are completely normal.

 

Thanks guys, sounds like I'm in the ballpark. Now that this is settled I can find something else to worry about. Aerosmith, good luck and good driving with the new car. I think you will be impressed with the handling.

 

What? Are you asking why the oil temp is higher than the water temp (which is how it should be) or are you saying that there is increased friction on the lubricated parts, which in that case I don't understand what you are saying...

 

If some cars run with an oil temp of 205 and others at 235 what's the explanation between the two assuming similar operating conditions? I've have never seen the oil temp go above 215 and that was in stop and go traffic in 95 deg weather. He says it is running 235 at 85 deg. So what explains this difference? Either increased heat generation (friction) or reduced heat dissipation.

 

Got ya and yes makes perfect sense to me! I wonder if both of the cars are same mileage, broken in the same, etc...

 

You'll know if the car is running too hot....she'll let you know. ;-)

 

This is a classic case of a manufacturer providing way too much info to the drivers of its cars. The temperature of oil may be useful to monitor during a race whne you are driving at redline for prolonged periods of time, but during normal driving conditions it's useless.

 

You want to know what us air/oil-cooled guys think about that statement?!

I think 235 should be ok for you water guys although I think it shouldn't go further up either, for an air cooled 911, it would be concidered too hot (200-210 is about the top limit) but that's because in our cars, heads then would be hotter than that.

 

At one time I had a 77 2.7 that seemed to overheat. On that car was an oil temp thermostat within pipes under the right front fender. It was supposed to be very hot to the touch. MIne turned out to be blocked as the thermostat wouldn't open. Cheap and easy fix. I have no idea if the late models have a similar arrangement. The head studs pulled out on this engine at about 70K and I was very fortunate in find a rebuilt 2.7 with euro specs and correct stud inserts.