yamahaSHO

They are supposed to work that way.

markforrester99

Yeah they are designed to work that way but people assume that the oil cooler wont see any oil until it hits the magic thermostat figure which isn't true. On a car like ours with a high pressure high flow pump you will still pump enough oil through a cooler to cause it to cool down too much during winter conditions.

yamahaSHO

High pressure has nothing to do with it. If you have a cooling setup with very low pressure drop, you'll flow more to it when both paths are open. At a minimum, you want some flow to prevent thermal shocking.

har-vey

Mark Is there any evidence of an aftermarket cooler actually over cooling the oil on a s2000? I understand the principle of it but what's the reality? What temp do you get on motorway driving?

spdracerut

Yes:
Project S2000 - Winter Testing and a Challenge

My follow-up solution was to tape over 1/3 the front bumper opening in cold weather.
Project S2000 - Track Testing Upgrades and Custom Brake Ducts

har-vey

You've lost me. This thread says the oil ran rather warm?

markforrester99

"The drive in the morning to the track was COLD. The air temp was only 22F with my oil only reaching 60C (140F) despite the Mocal thermostat being rated for 170F. I am glad I decided to stick with the standard 10w-30!"

har-vey

OK Cool think ill keep the donut then. What temps did you see on track? wondering if i put the cooler in behind the side of the bumper if i should go for a 13 or 19 row cooler?

spdracerut

Track temps are in both articles. In the series is also hot weather testing with additional oil temp info. It is for my specific oil cooler setup of which there is an article on it.

JRumble

If I remove the OEM oil cooler donut, what do I do with the two flow tubes that run to the block?