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I'm sure I've seen somewhere that it is OK to use GL5 oil for the front trunnions.

I think it was something to do with them not getting hot like a gear box or diff.

Can anyone confirm this?



I've a can of EP90 GL5 on the shelf and being somewhat a miser I'd like to use it up.



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GL5 will be fine for trunions, just don't use it in the diff, or overdrive gearbox.
It's only when GL5 spec oil gets very hot and put under a lot of shear forces between hyboid gears in the diff that the high sulphur components that do the damage get activated and damages yellow metals.

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