[TR] [6pack] Gear Oil Question

[DLylis at aol.com]

Bob, 
I think it is the American Petroleum Institute (API) and is a standardizing  
body.  
As you are using a Toyota box the GL5 may be OK.  From my research and  not 
experience, GL5 is not recommended for the TR box as the sulphur content  
wreaks havoc on the brass bushes.  GL4 is specified.  Toyota may have  used alloys 
that the GL5 is OK with.  Herman knows best.
 
Merry Christmas
 
David  Lylis
69 TR6 CC26160L
60 TR3A TS74461LO



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