peter y.s pang

Is it possible to get the oil thermostat keep open all the time and oil free flows to the front cooler under all situations. it can avoid the overheat during hot summer time in traffic jam.

Vandit

If your thermostat is working properly, then oil should be free flowing to the oil cooler long before you start overheating in hot summer traffic. Perhaps your thermostat is not functioning properly?

OverBoosted28

Probably not a good idea. Just like a radiator, it needs to cool the fluid before it leaves the
"Cooler". If it just flowed through the system, it'd never cool.

kjr914

The thermostat should open when the oil is hot, so if it doesn't, you have some issues to deal with... Check that your fan is working to cool things. Here's some info:
http://pcarworkshop.com/index.php/993_-_Oil_Cooler_Fan
There is a way to get the fan on the front cooler to run constantly:
http://pcarworkshop.com/index.php/99...verride_Switch

peter y.s pang

the thermostat working properly, the oil flow to cooler and the fan also running low/high speed. Just stuck in traffic jam for sometime, the oil temperature point almost to 10 o'clock. Any suggestion to make the oil low temperature. tks

ble2011

I could be wrong, but I don't think the gauge should reach the 10 if everything is working correctly. Mine hit that mark once when it was 105 degrees sitting in traffic in UT. I found out that my thermostat switch was not working correctly.

TMc993

I don't know your location, but it's not necessarily abnormal to see "almost 10 o'clock" on the gauge in you are idling in traffic during times of high ambient temperature and humidity, assuming it returns to normal when you get back up to speed.

In addition to the above suggestions, I would check the actual cooler and ensure that there is no debris blocking it, no dirt on the fins of the cooler and that there are no bent fins. The cooler isn't that large and you need all the airflow you can get.

KNS

On a cold start (even in hot weather), the T-stat stays closed to help warm up the engine as fast as possible. You don't want to prolong this critical warm up period.

mpruden

Just piling on here. It sounds like your car is working as designed. Mine certainly behaves that way when in traffic on a hot day.

I'd follow the recommendation of the experts on this board and just install an oil cooler override switch. When you notice the temperature creeping up when stuck in traffic, just flip the switch. You'll see the temp drop very quickly. The cooler does a great job once there is air flowing through it.

Vorsicht

You could add an additional oil cooler. See below link.

http://pcarworkshop.com/index.php/99...Oil_Cooler_Kit

randytrish

The fan override switch is the way to go. I was pleasantly surprised on how fast the oil temp comes down when you turn the fan on.

OverBoosted28

Both of these and as earlier suggested, take a spray nozzle and make sure your current oil cooler is free of debri. Just the hose, don't blast 500 psi pressure washer in there :-)

bjornebo

+1. It gets pretty hot here in the summer and the fan override switch is very effective for reducing the oil temp if it's getting high due to reduced air flow during stop/go driving.