Quote:
Originally Posted by fliprayzin240sx
GL-5 oils have something in them that doesnt bode well with the brass synchros in SR/KA trannies. Its fine as long as the gear oil temp doesnt exceed a certain temp, but when it gets too hot, the oil reacts with the brass and over time, eats it.
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GL5 or Synthetics?
I've been running Rotella 80/90 gear oil forever, and haven't really had any issues....not saying you are wrong, but I'm very interested to know!
Edit: Yea the FSM says Gl4...how on earth have I missed this forever!
Edit 2: Seems as if GL4 would be best in a stock application, while Gl5 is better for a higher power/temp situation? Both are designed for manual hypoid transmissions, and both are 'equally' as slippery...seems as if so long as you stay away from synthetic, you'll be ok.
I'll read more tomorrow, as now i"m interested....can't beleive in all this time I didn't see the Gl4, but it seems like Gl5 is ok still...