This may be a stupid question but i was cleaning my engine the other day and noticed a dipstick at the back of the engine by the brake fluid resevoir on a MY98 turbo, also how do you top it up and what do you top it up with. Cant find my manual!

 

gearbox oil

 

im afraid thats how u top it up, down the dipstick hole

 

what oil do you use please?

 

Any good 75w/90 gear oil. If you're just topping up, any name brand 75/90 will do. If you're putting a lot in, go for Mobil 1 SHC 75w/90, Silkolene Syn5, Redline Shockproof Lightweight or Castrol Syntrax.

It's also a good idea to fill the box to a fraction above the "full" hole on the stick. About an eighth of an inch or so above would be just the job, assuming the oil's cold and the car's level.

 

Why is it a good idea to slightly overfill Greasemonkey? Will that not potentially damage oil seals?

Just interested as mine is slightly below full (as per engine oil) and gearbox has always been a bit of a bitch when cold from first to second, even with good 75-90 oil.