Diff oil

[vxkev]

So after a lot of people saying on the GTO FB page that royal purple should be given a miss, I decided to drop the stuff out of my diff and replace with Castrol syntrax and some Redline modifier and what a massive difference, so much quieter and no knocking, should have done it when I replaced last year won't be using royal purple ever again.

[vxkev]

mfp4073 said:

OK guys, this is a new one! What are the problems with Royal Purple?

It attacks the soft metal parts in the diff that causes diff problems

Edited by vxkev on Friday 15th September 20:18

[vxkev]

GrumpyV8 said:

Would this be Castrol Syntrax 75W 140 by any chance? Can you give a clue as to how much Redline modifier you added please? Ta

Yes mate I put 1 ltr of the syntrax 75w 140 in first then 1/2 of a 4oz bottle of modifier then topped up with the second bottle of syntrax