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Oil cooler; when is it needed?
Hi all.
I recently have picked up downpipes, charge pipe, FMIC, and a blow-off valve for my beloved E93 335i. My car doesn't have an oil cooler so my question is simple: when is it necessary to add an oil cooler? These are my only mods to the engine.
Right now, my car is stock running an MHD stage 1 tune. My oil temperature has never gone past 250 degrees with the upgraded tune.
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