Quote:
Originally Posted by roy'sz
Its not the gl-5thats the problem. The GL is acroynmed for gear lube. The 5 is the quality level.
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Sorry, that's not true. GL-5 differs from GL-4 lubricants in the amount of EP additives it uses. These extreme pressure activated sulfar additives were designed for specific applications and are known to bond to, and damage soft materials such as brass and copper. So using a GL-5 lubricant in a Nissan gearbox that uses brass syncros can result in greatly increased wear (to the point the syncros no longer function).
So AlphaSnacks should contact Amsoil (or any other oil company) to verify this. And before damaging his gearbox further, immediately change his gearbox lube to a GL-4 lube like Redline MT85 that meets the viscocity requirements as listed by Nissan.