Re: high performance gear lube
my merc rep told me the merc HP lube is a semi-synthetic. forms mud at the bottom of the resevoir as the anti-wear additives settle out, the resevoir needs cleaning at least once a year or it clogs.
if this is a new application adding a few ounces is normal, if its over 20 hours its NOT normal.
dunno about mixing them, I just plan ahead and have the syuff on hand when its time.
I normally tend to use what the book calls for or what the book says the equivalent is.ie:GL-5,GL-4 so on so on.
the volvo GL5 and the mobil GL-5 are compatable, most likly refined by mobil anyway at half the cost.
these oils all have SAE specs. as long as its in the correct spec its ok.
but to answer your compatibility question? beats me. never tried it. the bravo's and the VP's both use a cone type clutch so I dunno.
