- Joined
- Jul 2, 2007
- Messages
- 5,294
Used this in my Subaru's manual transmission (hypoid front differential & yellow metal synchros under the same roof) for the following reasons:
1. One of few of 75W90 GL5's without Limited Slip friction modifiers
2. Reputable maker: private labeled for Wal Mart by Warren Petroleum
3. $4.97/qt
4. Synthetic blend, although this probably means Grp III as the 'synthetic' portion
Although the label states recommended for Mack GO-J apps, the approval list on Mack Truck website does not include any of the know label names for this gear oil: MAG1 Synthetic Blend Gear Oil 75W90, Coastal Synthetic Blend Gear Oil 75W90, or Supertech Synthetic Blend Gear Oil 75W90. Mack GO-J is completely meaningless for my application, yes, but found it interesting Warren would make the 'recommended for' claim for such a stringent spec.
Advance Auto Parts sells the Coastal labeled version @ $9.89, so buying under the Supertech (Wal Mart) label represents a significant cost saving.
Very early in the game, but so far the shift quality is as good or better than the factory GL5 gear lube that was drained.
1. One of few of 75W90 GL5's without Limited Slip friction modifiers
2. Reputable maker: private labeled for Wal Mart by Warren Petroleum
3. $4.97/qt
4. Synthetic blend, although this probably means Grp III as the 'synthetic' portion
Although the label states recommended for Mack GO-J apps, the approval list on Mack Truck website does not include any of the know label names for this gear oil: MAG1 Synthetic Blend Gear Oil 75W90, Coastal Synthetic Blend Gear Oil 75W90, or Supertech Synthetic Blend Gear Oil 75W90. Mack GO-J is completely meaningless for my application, yes, but found it interesting Warren would make the 'recommended for' claim for such a stringent spec.
Advance Auto Parts sells the Coastal labeled version @ $9.89, so buying under the Supertech (Wal Mart) label represents a significant cost saving.
Very early in the game, but so far the shift quality is as good or better than the factory GL5 gear lube that was drained.