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Posted by Kaegi [24.16.253.154] on Wednesday, October 19, 2011 at 11:44:36 :
In Reply to: Gear oil GL-1 vs GL-5 posted by D Sherman [72.47.9.228] on Monday, October 17, 2011 at 22:18:59 :
I use GL4. one thing I noticed aboutth GL5 is it tends too thin out much more at operating temps than the GL4. GL5 was developed for differentiall with clutches like the Detroit locker. 140 is too thick as far north as your are. ;/)