Comma Fully Synthetic Gear Oil

[akroblade954]

Hi all

I have read many topics / threads on gear oil for our buses and have determined that, for my 5 speed ASS box, original spec is 80w90 GL4 mineral oil. I have also read on here that GL5 is a no no, and synthetic is recommended. A GL4 / GL5 may also not be suitable. Also, a 75w90 GL4 should give a bit of an improvement for cold morning 1st to 2nd gear shifts.....

So, I am thinking this stuff from Comma would be a very good option that ticks most boxes (other than it would 3 times as much as the standard recommended grade of comma oil from Wilkinsons!!)?

Any comments or advice would be appreciated

http://www.halfords.com/motoring/engine ... iewDetails

[marlinowner]

I am using the semisynthetic version of that, seems fine, hasn't mended my worn syncromesh though!

[akroblade954]

I am using the semisynthetic version of that, seems fine, hasn't mended my worn syncromesh though!

Ha ha. No, won't work miracles.