Quote:
Originally Posted by churchx
Irace86.2.0: i might be wrong, but doesn't water temps rise even faster then oil ones and in this case even without thermostat won't oil temps in cold weather/cold temps with JR dual-rad rise quicker then with thermostat in forester heat exchanger? Thus having no thermostat might be even beneficial, as one less part to fail and less expensive kit cost then might be, and adding thermostat will even slow down oil warming up, as path to rad with hotter water will be closed off for oil until oil itself warms up?
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Yes the coolant heats faster than the oil. The difference is the Forester XT regulator circulates the warming coolant against the cool oil heating it up. Meanwhile, the coolant in the radiator is still cold because the coolant in the engine is warm but not hot, not hot enough to open the thermostat to circulate coolant through the radiator. Therefore, the oil in the JR setup is not being warmed—if anything it could be getting cooled by the radiator.
How much it matters or to what difference it makes, I don’t know.