Gear oils again

MarkPinz · Post by **MarkPinz** » Tue Jun 27, 2006 10:58 am

Sorry guys, but since the site crash I can't find my notes as to the gear oil to use in the trans

If I remember right GL5 in everything but the trans which should use GL4

:

Draining & replacing everything this morning in prep for a week in the eastern sierra nevada.

MarkPinz · Post by **MarkPinz** » Tue Jun 27, 2006 2:59 pm

The above is correct confirmed by master Jim

rollingpinz · Post by **rollingpinz** » Tue Jun 27, 2006 8:31 pm

Hello

Does this mean that I can't use GL-4 all around?

Eric P

Jim LaGuardia · Post by **Jim LaGuardia** » Tue Jun 27, 2006 9:30 pm

GL-4 won't hurt anything, but may discolor from heat sooner.

rollingpinz · Post by **rollingpinz** » Wed Jun 28, 2006 2:54 pm

Hello

When you say that it will dis-color sooner, does that mean that it will break-down sooner or simply change color and last just as long as the GL-5 ? The reason I ask is, the manual recommends SAE 80 (Specification MIL-L-2105) for every gear box, even the steering.

Eric P

wd8cdh · Post by **wd8cdh** » Thu Jul 06, 2006 12:49 pm

When the manual was written, GL-5 wasn't around yet. The closest thing to MIL-L-2105 is GL-4. GL-5 is better than GL-4 for almost anything but the syncros in the tranny. GL-5 is too slippery for the syncros.

I use GL-4 (Redline MT-90 synthetic) in my tranny but I use conventional GL-5 in everything else.