OK all you experts...how many stage is a 91 and what are they, PLEAZE.
I also heard that there was a special hardener used on the black roof of the 91. Any stories behind that rumor?
Thanks.
Bruce
I am thinking maybe in the U.S. things are different? In Canada PPG still lists R-77 as a tri coat:
R-77 Formula Red, Base
4367
Formula Red, Top
4437
Angus are you sure they still use solvent based automotive paints where you live?
I called the PPG tech line and they believe BC and Canada did away with solvent automotive paints just like Europe and parts of California so neither of those formulas would be of any relevance up there.
PPG EnviroBase(waterbourne) is what we use and the in waterbourne the 4367 is a base clear/formula, no mid coat, and the latter 4437 is not in that catalog at all.
HTH.