Seriously,, 75w85?

Joined
Jun 5, 2006
Messages
1,513
Location
Peterborough
I'm not familiar with Redline 80w90, BUT, the MTL and MT90 are formulated for transmissions, and my guess is that the 80w90 is a GL5 Gear lube which is a nono for brass synchros in the tranny. Thats probably why its best to mix the two. Call Redline, they'll help you out.
 
Joined
Feb 1, 2003
Messages
8,756
Location
RI
80 7.0-10.99 cst 85 11.0-13.49 cst 90 13.5-18.40 cst We mix because we can tailor the cst for what we want. Redline GL5 Superlight 5.0cst Redline GL5 Lightweight 10.6cst Redline GL4 MTL 10.6cst Redline GL4 MT90 15.6cst Redline GL5 75w90NS 15.6cst Redline GL5 75w140NS 26.9cst
 
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