I use the 75w-90 max gear in the Konrads. Thats what I was told to use by Konrad. No problems as of yet.

I get my Royal Purple from here..

http://www.rpmoil.com/index.php?main_page=index

What weight would you guys use for TRS drives

Royal purple....Great stuff. Using in my Bravo 1's.

Yes factory specified for Konrad. Works great !

I was using the Amsoil 75/90, but was told to go with the Royal Purple. I would imagine that the 75/90 is the route to go as I certainly don't want to lose any speed?

That's what I would go with.

I was told to stick with the merc high perf in my speedmaster #3......Change it every 25-35 hours.......I have been ramming 750 hoarsepower down its throat for a 140 hours with no problems to speek off, it is the only part on the boat i have not broken yet...........

Just found some at NAPA for $10.89/qt. If I buy a case, $9.89/qt. Not too bad. Is there a shelf life?

Since I've always paid to have it done. How many qts for each Bravo drive? Thanks.

RP is more similiar to Mobil-1 and Amsoil than different. They do put a purple dye in it for the fun of it.

My feeling is that Mercury HP is very good and the others being synthetic are a tad bit better.