Quote:
Originally Posted by oilman
The Edge 10w-60 has an ester content, which the Edge Sport doesn't and that makes the Edge a better choice for track use as it's a better lubricant and more stable at higher temps.
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But realisticly if your doing oil changes often anyway I recon both are fine. I use edge sport in mine and do oil changes every 5000km's or after every track day. I know mine isn't a CSL but it does make 400rwkw and never been an issue with edge sport.
I personally think the only reason to stick to edge/TWS is if you stick to the factory BMW servicing which I don't recommend. It's too far between. But if you do I think that would justify staying with using the factory oil.