Gear oil.

[Brigsy]

What does everybody use in the gtt box?

Up to now i have always used 75w90 from my local motorfactors when needed to fill box or top up etc as they dont sell the trx80w thats specified. I have been assured it is fine by many.

When the gear oil has been drained out the oil always comes out black after a short time which i assume is not good & possibly contributing to the 2nd gear syncro damage i have done a few times in the past?

Would it be worthwhile chasing up the proper o.e spec oil? I have also looked at the red line racing shockproof oils, even though its very expensive id be willing to pay the extra if the box lasts longer.

[Mart]

Any GL5 rated gear oil should be ok.

I've always used Castrol Syntrax Universal 75w/90 on my gtt's & the Evo 'box. All good

[clee]

Three people with Renault training have told me never to use anything else but the OE 75/80w for the UN1 or the syncros will suffer .
Halfords sold it about 6 months ago .

[J$£5GTT]

75/90 here

[Os8472]

75/90 comma gear oil

[Jessop]

What about this sooper duuper redline gear oil thats supposed to aid gearbox damage; or make it stronger - or so people claimed a while back?

[Tony Walker]

What about this sooper duuper redline gear oil thats supposed to aid gearbox damage; or make it stronger - or so people claimed a while back?

Aid gearbox damage? great advertising if thats what it says on the tin

[Sparkie]

i always used to use, the TOTAL BV stuff that cit/pug recommend. - GSF sell it. its 75/80w and does make for a slicker gear change in a JB3 box

[jonnyshaw49]

How much gear oil is needed to drain and refill the gt box? Thanks

[TNT Tricky Nicky]

think it's 3.5 litres of the top off my head, was cheaper to buy a 5 litre can than individual litre bottles.

wilcos stock the recommended grade if you struggle to find it