Originally Posted by Kevin C
"Does that make them satisfactory for synchromesh or synchronized transmissions?"

The article addresses the issue with using GL5 in a synchronized gear box.

FYI On a GEN1 and GEN2 there are no synchronizers in the transfer case to have a wear problem with. There are bronze thrust washers. However, the loading and heat level are not sufficient to cause any problems. I have never had the transfer cases apart on the later models.

The transmission is a different story and GL5 can reduce synchro life.

Update... Until I can confirm I should have said no synchros in a GEN 1.

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...