Quote:
Originally Posted by Capt Spaulding
I'm not sure how much weight to put on the oil warming part of the JR's mission statement. Their oil cooler sits in the radiator and the water in the radiator is only going to get warm when the thermostat opens and that may take a while in cold weather.
If someone is really interested in temp "regulation," the best choice is still probably the Subie unit. They just need to make sure to plumb the cooler into the coolant bypass circuit. That water warms up much quicker than the radiator. Some implementations of the Subie cooler plumb it into the lower radiator hose. I don't think that is going to circulate water until the thermostat opens either.
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I run the JR dual cooler and while it has been perfect for my application I don't feel that it has much impact on warming up, if any. My car doesn't get driven in the winter, so I can't say if it would be more effective in truly cold temps. The coldest I've run in is the odd 40F-ish day in spring or fall.
My car is NA, catless header without any kind of wrap or heat shielding. On the street it hangs around 190F, on the highway it's usually between 200 and 205 depending on ambient. On track I'm stable in the 230s for full 20 minute+ sessions, down from 255+ after two hot laps prior to install.