Quote:
Originally Posted by nextcar
Disclaimers:
1) I (or AFAIK no one else on this forum) am not a Subaru engine designer.
2) Correlation does not imply causation.
Facts:
1) Subaru has an oil-coolant heat exchanger in its parts bin that has been used on multiple production cars from the factory.
2) Turbo charged engines are known to produce more heat than NA engines.
3) There is a correlation between Subaru's use of the oil - coolant heat exchanger and the presence of a factory installed turbo charger.
I, for one, draw the conclusion that it is primarily for cooling the oil, and the secondary benefit is heating the oil. The overall effect is more stable oil temperatures.
I am probably biased; I installed the Forrester unit on my FRS for occasional track use as "cheap insurance". Necessary? Probably not. But it fits my philosophy of modest, inexpensive modifications that make me more confident in my car's performance on the track without significantly reducing its utility as a daily driver.
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Hry, a logical response. I like this. ANOTHER!