Alternative gear oil

[hiloran]

Anybody know alternative for G 055 145 A2 gear oil. It have some "special" additives compared to normal gear oil. Oil goes to centre differential (torsen) in ZF tiptronic gearbox. Price for one liter in Finland is ~160-180€/L, U.S ~90$/L, germany ~120€/L. I can´t find any febi,castrol,mobil etc alternative.

[BrianSmith_S2]

Anybody know alternative for G 055 145 A2 gear oil. It have some "special" additives compared to normal gear oil. Oil goes to centre differential (torsen) in ZF tiptronic gearbox. Price for one liter in Finland is ~160-180€/L, U.S ~90$/L, germany ~120€/L. I can´t find any febi,castrol,mobil etc alternative.

http://www.opieoils.co.uk/p-6363-cas...ion-fluid.aspx

[Michael S2]

Castrol Syntrans Transaxle 75W-90 was recommended to me as well. The newer gear oil will be far superior to what was being used back when these cars were new so will not require any additives.

[hiloran]

For centre differential G 055 145 A2 Transmission oil is with 3% Sturaco additive. Not sure what it does and is it really needed. At least older torsens did not need this additive. Castrol Syntrans Transaxle 75W-90 is OK for front and rear differential

[GT500]

Remember that it cannot be GL5. Too slippy. Opie gets it wrong.
If you use GL5 baulk rings die in a couple of years and the change is slow.
GL4.

[Michael S2]

Yep as said you want gl4 for gearbox and gl5 for the diff. Both are 75w90 but you don't want to get them the wrong way round.

Here's a photo of what I got, gear oil left, diff oil right

[diesel des]

I have used duel rated gl4 gl5 oil in the diff and gearbox with no slow change issues.

[GT500]

I have used duel rated gl4 gl5 oil in the diff and gearbox with no slow change issues.

It'll come....
For the oil to get dual rating it will have to be gl5.