Quote:
Originally Posted by CSG Mike
Realistically? A 0W base stock will be thinner at temp, than a 5W or 10W base stock. Even with 300V. 30W is a range, of viscosities, not a hard number. The oil does get a bit toasty at temp...
FWIW, we saw no hp difference between the factory fill 0W20 and 5W30 300V on the dyno. Not even within the range of error.
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Modern PAO IV and group V syn oils do not use the 0w,5w,10winter as the base (Group I-III are different hence the VI additives).
Just because it is 0winter does not mean it will be measurably thinner at temp and may actually be thicker than an comparable 5w-30 (which some could argue may be a bad thing at temp heat transfer wise) that's the beauty of modern engineered syn oils (although one must pick wisely because all IV are not equal as we all know)
"30W is a range, of viscosities, not a hard number" I am confused? you mean SAE30 Or you mean weight and not winter?
"FWIW, we saw no hp difference between the factory fill 0W20 and 5W30 300V on the dyno" I am not concerned with HP like i said for a DD/track car and also looking at longevity and overall protection over say 100-150k for example.
Anyhow Run what you brung and have fun!