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Originally Posted by sp00ln
Supposidly GL-5 is BAD for the DSM transmitions - this, thin shockproof is not GL-5, right?
Scott, you blew up your motor? What?
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I can't immediately see any drawback to GL-5. What GL-5 means is that it can stand up to higher pressures without breaking down and losing its lubricating properties. The kind of pressure you only get in differentials on the ring gear, and not on the gearbox drive gears. The "shockproof" part refers to its ability to ensure the synchros work as fast as possible, helping to prevent your shifts from happening faster than the synchros can, well, synchronize and cause grinding. Supposedly it doesn't lubricate your bearings as well, but that's a worthwhile trade-off for us subaru guys. We'd rather have a bearing fail 6 or 8 years from now than have a gear sheer off next month.