My Gallardo twin turbo runs around 230-240F all day long and it's fine. 220F is nothing and I wouldn't worry unless you see it get up to around 275F.

 

Glad to here that 240 deg. F isn't bad... I was freaking out when i was cruising on the highway cause my car was at that. I was blasting the heat and doing 60 MPH, which sucks in the summer with no a/c, lol

 

 

x2

 

I disagree with what everyone else is saying. The S2000 stock runs right at 100 degree C (212F) with the A/C on in warm weather while just cruising on the highway. Your friend has the same oil cooler setup and runs much cooler. So that should obviously tell you that something else is wrong. Beyond just the fact that something is probably wrong, running higher oil temps makes it more likely for detonation to happen. With cooler (back down to 212F) oil, you can probably run more timing and make more power.

 

I disagree with everything your saying here.

My porsche carrera gt twin turbo runs around 230-240F all day long and it's fine. 220F is nothing and I wouldn't worry unless you see it get up to around 275F.

 

So you're saying that a car that is designed to operate at 212F, but is running hotter is okay. A similar car with the same turbo seutp and the same oil cooler setup doesn't even hit 200F, but this car is hitting 220F, everything is okay and nothing is wrong. Where's the logic in that? One of my buddies had an old C4 Vette and it ran COOLANT temps in the 230F range, but it was DESIGNED for it.

Sure, with the higher oil temps it'll hold up, but it's not the design intent and will lead to reduced reliability or life span. It's as simple as that. Furthermore, this was purely high way cruising and not even being tracked on a road course. On a road course, the temps will skyrocket.

Plus, this might just be a sign that the oil pump is going out. Bad oil pump = reduced oil flow = less oil cooling in the oil cooler. And a bad oil pump = blown engine.

 

220 degrees is not hot at all for oil. My evo8 hits 220 at times just crusing on the freeway.

Maybe you have your oil temp sensor befor the oil cooler and not after it.

My Evo8 with the stock oil cooler hits temps of 190-210 on average but I have seen 220--230 during long hill climbs on the freeway. I believe 220-240 is optimal oil temp for racing conditions.

 

So you're saying that a car that is designed to operate at 212F, but is running hotter is okay. A similar car with the same turbo seutp and the same oil cooler setup doesn't even hit 200F, but this car is hitting 220F, everything is okay and nothing is wrong. Where's the logic in that? One of my buddies had an old C4 Vette and it ran COOLANT temps in the 230F range, but it was DESIGNED for it.

Sure, with the higher oil temps it'll hold up, but it's not the design intent and will lead to reduced reliability or life span. It's as simple as that. Furthermore, this was purely high way cruising and not even being tracked on a road course. On a road course, the temps will skyrocket.

Plus, this might just be a sign that the oil pump is going out. Bad oil pump = reduced oil flow = less oil cooling in the oil cooler. And a bad oil pump = blown engine.
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My bugatti veyron quad turbo runs around 230-240F all day long and it's fine. 220F is nothing and I wouldn't worry unless you see it get up to around 275F.

 

Again, you're missing the point. I don't care what your Veyron or twin turbo Carrera GT run. Hey, my AP1 S2000 revs to 9k rpms, so my Toyota Corolla should be able to do the same right? A car is a car in your comparison.

Again, Car #1 is the same as Car #2, same turbo setup, same oil cooler setup. Car #1 doesn't even get to 200F, Car #2 hits 220F just highway cruising. That should tell you something is wrong. So they have replaced the oil cooler, no result. Bypassed the thermostat, no result. So information we are missing is oil pressure and oil flow. Hopefully oil flow can be infered from oil pressure.

My hypothesis still stands, the elevated oil temps are due to reduced oil flow. So maybe the oil pickup screen got clogged. Maybe the oil filter is clogged. Maybe the oil pump is going out. I don't know. Knowing the oil pressure would be a good start.