I myself prefer using a GL-5 oil to better protect the ring and Pinion
gears. This is the expensive part. I have yet to  see any sign of Syncros
corroding especially with any of the synthetics. The shifting will work just
fine even with the improved EP characteristics of the GL-5.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
JRodgers
Sent: Saturday, March 30, 2013 2:48 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Tranny Fluid - Manual Transmission

On my 88GL I need to service the transaxle and swap out the tranny fluid. I
have been running Redline MT 90 for a long time now, and wonder if it is
still the best or a very good choice. It sure made shifting easier when I
made the switch. Is it still good enough??

thanks

John