I have a 1988 535is 5 speed.
I have a radiator from a 535is auto installed which has a small section dedicated to cooling the tranny oil.
Is the small section enough to use as an oil cooler for the turbo or should I use the standard size oil cooler from my e23 745, or both?
I'll be installing the e23 745 turbo system in the spring or sooner if I'm lucky.