Originally Posted By: Virtus_Probi
Interesting thought...I have noticed that my relatively low performance turbo darkens oil very quickly (even when I don't put MoS2 in it ;^).
Relatively low boost and/or volume, maybe. Not low performance, though. Still over 140 hp/L. That's not huge, but it's not small either. Somewhere between a base Veyron (125 hp/L) and a Veyron Super Sport (150 hp/L).
Your car's turbos are pretty small IIRC, so they must be spinning like demons at high RPM.
Originally Posted By: Virtus_Probi
I'm also wondering if maybe the RS7's cooling system just wasn't up to tracking the car in such high temps?
Well, it's not exactly a track car, is it?
First time I saw under the hood of an RS7, I remember thinking "there's no way this thing gets enough cooling." 570 hp from a twin-turbo engine pushing >140 hp/L, shoehorned into that cramped engine bay... Evidently it works just fine, but I can't imagine it works as comfortably as a real track-oriented car would. Big super sedans rarely do, let alone the ones with so much engine crammed into such little space.