Gear oil change issue

[laith]

Hello

I was changing my gear oil on my seat leon fr 1.4 manual from 2014.
I know it supposed to take 2.1l. I drained the oil and appears to be around 1l, which made me confused.
I started refilling and it starting dripping oil as soon as I refilled around half a liter, I kept trying to refill quickly while it was dripping at the same time.
Now I'm uncertain if I have the correct oil level.

Can someone tell me what the hell is wrong?

 

[SuperV8]

I don't have experience of your gearbox, but this seems quite a thorough write up:

How to change the oil on a Mk7 Golf MQ200 or MQ250, 5 speed or 6 speed, manual gearbox.

Disclaimer:- This info is for community usage. I am NOT affiliated to, or sponsored by, any company/individual to promote them or their products. Companies/individuals may NOT use my name, photos, or threads/technical guides, for financial or personal gain (fraudulent misrepresentation). Part 1...

www.golfmk7.com

 

[laith]

I don't have experience of your gearbox, but this seems quite a thorough write up:

How to change the oil on a Mk7 Golf MQ200 or MQ250, 5 speed or 6 speed, manual gearbox.

Disclaimer:- This info is for community usage. I am NOT affiliated to, or sponsored by, any company/individual to promote them or their products. Companies/individuals may NOT use my name, photos, or threads/technical guides, for financial or personal gain (fraudulent misrepresentation). Part 1...

www.golfmk7.com

Thanks, but it's really confusing. I'm still not sure if I filled it right.

 

[SuperV8]

Thanks, but it's really confusing. I'm still not sure if I filled it right.

Presuming you have the MQ250? - it's not a normal drain/fill
2x drain points and fill from the reverse light switch hole.


quoted from the link I shared:

Procedure for the MQ250 gearboxes
FIRST & Highly Important!:- You need to FIRST lock the selector mech with the little black lever handle, this is on the top side of gearbox case. Put selector in neutral & push down a small amount & feel with the other hand for the indent whilst turning the small black locking lever from 9 o’clock to 12 o’clock. If you do not do this you will lose the position of the gear selector mech in the gearbox & you are in for a tow job to the dealers!!

2. Using a 17mm hex undo the main rear drain plug & collect the oil in a suitable container.

3. After the above has fully drained remove the pivot pin plug (bolt requires T-Star T45). Allow the oil to fully drain from here. Once this has drained, fit new o-ring (VW part no. N90362001) to the plug shank. Lightly lube the plug & “O”-ring with new gearbox oil, & use a small amount of medium strength thread lock (blue Loctite) on the bolt. Replace the plug & torque bolt (25Nm/18lbft).

4. Clean threads, & replace the main drain plug & torque (35Nm/26lbft)

5. Now you can unlock (turn the black lever handle back to 9 o’clock) the selector mech & make certain it is in neutral to avoid damaging the reverse light switch.

6. Remove the reverse light switch (undo connector easy by squeezing top of tab into body), & then use a 22mm spanner or long socket.

7. Using a 10mm dia max (external) hose (18inch or 50cm) & funnel, insert hose into the hole for the reverse light switch & slowly pour in the new oil (this takes ages..so kneel on floor on cushion...)..(measure out the oil beforehand & pour no more than the stated amount for your gearbox)

8. Refit the reverse light switch & use some blue hymolar on it (flex gasket/sealant)...torque up (20Nm/15lbft). I used a 22mm diesel injector tall socket (also does Lambda sensors) & reconnect the reverse light switch.

 

[laith]

Presuming you have the MQ250? - it's not a normal drain/fill
2x drain points and fill from the reverse light switch hole.


quoted from the link I shared:

Procedure for the MQ250 gearboxes
FIRST & Highly Important!:- You need to FIRST lock the selector mech with the little black lever handle, this is on the top side of gearbox case. Put selector in neutral & push down a small amount & feel with the other hand for the indent whilst turning the small black locking lever from 9 o’clock to 12 o’clock. If you do not do this you will lose the position of the gear selector mech in the gearbox & you are in for a tow job to the dealers!!

2. Using a 17mm hex undo the main rear drain plug & collect the oil in a suitable container.

3. After the above has fully drained remove the pivot pin plug (bolt requires T-Star T45). Allow the oil to fully drain from here. Once this has drained, fit new o-ring (VW part no. N90362001) to the plug shank. Lightly lube the plug & “O”-ring with new gearbox oil, & use a small amount of medium strength thread lock (blue Loctite) on the bolt. Replace the plug & torque bolt (25Nm/18lbft).

4. Clean threads, & replace the main drain plug & torque (35Nm/26lbft)

5. Now you can unlock (turn the black lever handle back to 9 o’clock) the selector mech & make certain it is in neutral to avoid damaging the reverse light switch.

6. Remove the reverse light switch (undo connector easy by squeezing top of tab into body), & then use a 22mm spanner or long socket.

7. Using a 10mm dia max (external) hose (18inch or 50cm) & funnel, insert hose into the hole for the reverse light switch & slowly pour in the new oil (this takes ages..so kneel on floor on cushion...)..(measure out the oil beforehand & pour no more than the stated amount for your gearbox)

8. Refit the reverse light switch & use some blue hymolar on it (flex gasket/sealant)...torque up (20Nm/15lbft). I used a 22mm diesel injector tall socket (also does Lambda sensors) & reconnect the reverse light switch.

What's confusing is that I've seen videos on YouTube and they're all using the standard drain and fill plugs.

I don't get why changing the gear oil on my car now requires a whole bunch of other steps.

 

[SuperV8]

What's confusing is that I've seen videos on YouTube and they're all using the standard drain and fill plugs.

I don't get why changing the gear oil on my car now requires a whole bunch of other steps.

If you read the rest of his post - he mentions about VAG re-using an older gearbox casing design but connected to a differently leaning/canting engine - meaning the fill plug would be in the wrong place.

 

[laith]

If you read the rest of his post - he mentions about VAG re-using an older gearbox casing design but connected to a differently leaning/canting engine - meaning the fill plug would be in the wrong place.

Yeah you're right.
I called a seat garage and got them to send me this, but it looks a little unmanageable and I'm now hesitant about changing it properly now.

 

[SuperV8]

Yeah you're right.
I called a seat garage and got them to send me this, but it looks a little unmanageable and I'm now hesitant about changing it properly now.

All you need is a funnel and a pipe! and ideally a torque wrench for the drain plugs.
2x drain points - but lock the transmission first.
Fill with correct oil volume.