<VV> Marine Lower Unit Gear Lube

[JVHRoberts at aol.com]

I wouldn't risk it, if I were you. Even though it seems to meet all the 
specs, the risk isn't worth the savings. For one thing, marine lower units don't 
run anywhere near as hot as a Corvair diff could, since lower units are totally 
immersed with water running over and through them. Also, lower units are 
typically filled with almost no air space, so foaming issues are rather different 
than for a final drive unit. 
And then there's the potential issue of how well it'll work with syncros. 
Marine lower units typically contain no brass or bronze parts, due to the 
potential for electrolysis. And they certainly don't contain syncros! 
My 2 cents worth...

John


In a message dated 2/27/2005 9:41:55 PM Eastern Standard Time, 
goofyroo at excite.com writes:
Wal-Mart is closing out their supply of Pennzoil Marine Synthetic 75W-90 
Lower Unit Gear Lube.  Its specs include API and GL-5.

Only thing I notice missing that's usually specified for Corvair 
differentials is "hypoid."

Would this stuff be a good or bad choice for a '63 4-spd. without Positrac?

Michael Smith
Dallas