Hi guys,

 

Have had a search in the forum but haven’t found any history on this topic - has anyone had a crack at changing their manual gearbox oil on an Octy 3?

 

I believe it’s VAG’s MQ350 ‘box in the 2.0TDI and Opie Oils pointed me in this direction for the replacement fluid:

https://www.opieoils.co.uk/p-976-fuchs-titan-sintofluid-fe-sae-75w-synthetic-manual-transmission-oil.aspx

 

I’m doing an engine oil change soon so will have a recce to see what access is like/where plugs are while I’m under there, but thought I’d check if anyone had any intel on it first.

 

Cheers! 

at what mileage gearbox oil needs a change?

2 minutes ago, TTodorov said:

at what mileage gearbox oil needs a change?

 

Skoda don’t quote an interval for replacement - it’s nominally “filled for life”.

 

Mine’s a bit clunky when shifting so thinking of changing the oil to see if it helps.

5 hours ago, kloeffon said:

 

Skoda don’t quote an interval for replacement - it’s nominally “filled for life”.

 

Mine’s a bit clunky when shifting so thinking of changing the oil to see if it helps.

 

Filled for life, but I would Imagine fresh oil would extend that life.

Hello

 

Did anyone ever drain and refill their manual gearbox?

 

If so what sort of job was it, anything to watch out for, and what oil did you refill with, and how much (quantity).

 

Last of all does it feel okay, hopefully smoother afterwards?

 

Sorry for all the Q’s.

 

Cheers

On 18/04/2019 at 22:28, jasongelly said:

Hello

 

Did anyone ever drain and refill their manual gearbox?

 

If so what sort of job was it, anything to watch out for, and what oil did you refill with, and how much (quantity).

 

Last of all does it feel okay, hopefully smoother afterwards?

 

Sorry for all the Q’s.

 

Cheers

 

Hi, just done it as it happens - ran out of time when I serviced last time (when I started this thread).  I've attached some pics.

 

Make sure you can get the fill plug out before you drain it 

 

The fill and drain plugs are both 10 mm Allens (M22, part number N10037105).  I've just reused the originals, there's no washer or anything.  Torque to 30 Nm.

 

For actually getting the oil into the 'box, I used some ~10 mm tubing, running from the top of the engine bay down into the fill hole.  You should be able to wedge it against something inside the gearbox to hold it in place.

 

I put a hole in one of the bottle lids, stuck the inlet end of the tube through, and sealed it with plenty of tape(!).  I then just needed to attach each bottle to the same lid.  To help the flow I stuck a hole in the first two bottles to let air in, and had a bit of tape attached adjacent to it (ready to put over the air hole in case I needed to stop pouring).

 

I used the oil linked from the first post on this thread.  You need 2.3 litres to fill it.  I put another 100 ml in (going by the gauge on the side of the bottles), to take account of the dregs I'd left in the bottom of the bottles / the tubing.  I think if the car was level you'd just fill it till it overflowed out the fill hole, but I was just working off axle stands at the front, so went the measurement route.

 

Just been for a quick test drive so far, but the initial impression is that was quieter and smoother in some gears.  Third was a bit clunky... although it was before anyway.

 

 

 

 

On 18/04/2019 at 22:28, jasongelly said:

Hello

 

Did anyone ever drain and refill their manual gearbox?

 

If so what sort of job was it, anything to watch out for, and what oil did you refill with, and how much (quantity).

 

Last of all does it feel okay, hopefully smoother afterwards?

 

Sorry for all the Q’s.

 

Cheers

I knew of a guy who unfortunately took a bolt out of the casing of a gearbox thinking it was a level plug, something dropped internally. Whoops!  The car had to be transported to the VW dealership. 

Why check the oil level if the box is dry. I have never changed any manual gearbox oil only topped them up if a leak was apparent.....  These being 70 's  propshaft cortinas and MGB's

Thanks for the replies.

Just did this on my 6-speed manual box. Drained/filled exactly 2.2L, thks for help from this topic.
Filled with Ravenol MTF-3 SAE 75W, with help of big syringe

(just be sure to get normal one, because cheap metallic syringes leaks through all gaps).