Gear box oil sealed for life

moonwatcher · 07-03-20, 07:57 PM

I have the engine and gearbox out ready to go back in, question should I change the gear box oil?
I can't see it could do any harm?
Let sleeping dogs lie or not!

tractor Dave · 07-03-20, 08:04 PM

Yes, for sure. Get it changed. The gearbox oil in my 1994 S2 looked horrible!
The diff oil in my Ur looked even worse! I've yet to change the Ur gearbox oil but it's on the jobs list.
You can get new fill/drain plugs on ebay and I recommend you change them while you are at it. You might find they are seized (mine were on the S2). I got around that by welding a bolt in the opening and the heat got it moving.

tractor Dave · 07-03-20, 08:14 PM

https://www.ebay.co.uk/itm/VW-M24x1-...AAAOSwVFlULnpG

BackintheFold · 09-03-20, 09:35 AM

As Dave says, yes. Change the oil.
With the box out it's easy, when it's back in the car its a nasty job, and much harder to deal with broken filler/drain plugs!

moonwatcher · 09-03-20, 06:26 PM

Thanks for that info/advice, the plug in the quattro section is the same size, I've ordered two

09-03-20, 06:26 PM	#5
moonwatcher 4 ring whore! Classic Audi Club Member Join Date: Jul 2008 Location: Barrow in Furness, Cumbria Posts: 2,049	Thanks for that info/advice, the plug in the quattro section is the same size, I've ordered two __________________ Coupe Quattro 1985

07-03-20, 08:04 PM	#2
tractor Dave Senior Member Classic Audi Club Member Join Date: Apr 2018 Location: Wales Posts: 1,157	Yes, for sure. Get it changed. The gearbox oil in my 1994 S2 looked horrible! The diff oil in my Ur looked even worse! I've yet to change the Ur gearbox oil but it's on the jobs list. You can get new fill/drain plugs on ebay and I recommend you change them while you are at it. You might find they are seized (mine were on the S2). I got around that by welding a bolt in the opening and the heat got it moving.

07-03-20, 08:14 PM	#3
tractor Dave Senior Member Classic Audi Club Member Join Date: Apr 2018 Location: Wales Posts: 1,157	https://www.ebay.co.uk/itm/VW-M24x1-...AAAOSwVFlULnpG

09-03-20, 09:35 AM	#4
BackintheFold Senior Member Classic Audi Club Member Join Date: Feb 2019 Location: Near an MB ur Quattro Posts: 1,171	As Dave says, yes. Change the oil. With the box out it's easy, when it's back in the car its a nasty job, and much harder to deal with broken filler/drain plugs!