Quote:
Originally Posted by CSG Mike
Yup, that's what our BRZ is driven on, year round.
If you're in a REALLY cold area, 0W20 may be better for the cold start. Oil change intervals are best determined by UOA (with optional TBN). Changing oil early will only hurt your wallet, but it may give you extra peace of mind. Not everyone is comfortable with extended oil change intervals.
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I really do not understand why there is so much focus on cold viscosity 0 vs 5? IMHO for a double duty DD/track car I would just go 0-30 and be done with it especially with any group V syn due to the base (conventional oil would be a different story). Technically even at 80F it is a cold start so why not.