^ You should do some uoa's on it. Here's a good FAQ:
http://performanceracingoils.com/faqs-ezp-2.html
And some more info from one of the co-founder's of Millers N. American distributor in this discussion (user 67King):
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2727400]
Although, I would probably stick with 0W-20 with such a robust oil unless you have bearing clearances that spec a 30 grade. I don't see what you would gain from running a 0W-30 if you have stock internals. You're already getting PAO/Ester base stocks and higher levels of anti-wear additives and friction modifiers than found in typical SN/GF5 oils. Same goes for any race oil.
Quote:
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Suitable for operating at 125°C with peak temperatures up to 150°C. Intended for racing and track use. Can be used for road cars where a fully synthetic 0w20 is recommended by the original manufacturer.
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http://www.millersoils.co.uk/automot...tor=Motorsport
Quote:
Rogue Motorsport conducted back to back tests comparing Millers Oils’ CFS 0w20NT Nanodrive oil against the factory supplied oil of the same viscosity grade in the new Toyota GT86 ...
Results- Changing from factory fill oil to Millers Oils CFS 0w20 NT Nanodrive increased peak power from 157 to 163.1 bhp, an extra 6.1 bhp or 3.8% peak power measured at the hubs
- Maximum torque was also from 127.5 to 131.3 lb/fts, an increase of 3.8 lb/fts or 2.9%
It should be noted that the factory fill oil had been used for 1000 miles and this will have thinned the oil a little, making the results obtained with the Nanodrive oil even more impressive.
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http://www.millersoils.co.uk/news/20...Power-Test.asp
-Dennis