After struggling to find any info on the specific type of oil used in the UP! gearbox I took the plunge rung up VW and bought me a bottle of this:

 

 

VW Part Number G 052 527 A2  -   £27.50 per Litre  (Super expensive)

 

I checked with the VW parts man multiple times to verify this is the specific oil for the VW UP! gearbox and he said yes. It does look and smells similar to what drained out originally.

 

 

This oil is VERY VERY thin, More like the viscosity of Automatic Transmission Fluid!

 

If you use a regular GL4 Gear oil in this gearbox gear shift quality will be reduced and will be much harder to shift when cold.

 

This VW part number does reference on some other oil manufactures websites so an alternative may be able to be found.

 

 

 

 

Quick guide out of the manual on how to change the oil:

 

 

Drain Plug. Tighten Back to 30NM

 

 

 

 

Take the airbox off(just pulls up and away no bolts)

 

Put hand down behind engine on top of gearbox and feel for plastic blanking plug, its held in place by a torx bolt.

 

Remove bolt and pull plastic blanking plug out of gearbox (can be a little stuck at first)

 

Refill with oil (1 litre capacity)

 

 

Doing this procedure didn't cure any of the classic rattling noises you get with these gearboxes. They just seem to be noisey even with exra thick oil in them which i tried before. Ive resorted back to vw oil because shift quality is awful with thicker oils.

Bit late reply, but all citigo's and up's I've been in all have the same noise. The same engine/box is now fitted to fabia's! And also in new caddy vans. As far as skoda are concerned, the noises are normal.

If anyone is going to do this, make sure you have the filler plug off before draining the oil!

hi is this for the automatic gearbox