Quote:
Originally Posted by Stainless 45
Redline 5w-50, no more ticking for me. Had actually forgotten about this issue
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The S65 loves 5W50. In a desperate attempt to lower oil temps I swapped to a 5W50 and it's like a miracle drug for the engine. Temps are lower, it's quiet, smooth, etc...
I don't have any data on long term effects so proceed at your own risk but I've run Castrol 5W50 when I had cats, did oil analysis, everything came back perfect. Since ditching the kitties I've been running Motul 300V 5W50 and from everything I can tell the car absolutely loves it.
I have about 8k miles over three years on the engine since switching, of which probably 7k are hard track miles. Everything appears to be good, oil analysis (which I don't really trust) are good.