I remember reading that gl5 eats brass and is therefor not suitable for use in the diffs. I just checked the comma oils website and it says use gl5 for diffs and not the transfer.
So what do you use gl4 for all or a mix gl4 transfer and gl5 diffs?
cheers people
James
 
GL4 in both for me aswell, saves buying two!

Annoyingly all my suppliers say that GL5 supersedes GL4 but in Land Rover world this is not correct!
 

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