Replacement gearbox required for GTi

[h100vw]

I have always managed to get 2 litres in at least. Penrite started selling 2.5 litre bottles which was a bonus for my last change, not having 3/4 litre left over.

Flushing with redline is a pretty expensive way of doing things.

You'll always get a hint of metal work in the oil. I fitted a magnetic plug in mine at the last change, hoping to keep that crap from circulating all the time.

You have to give the new fluid a good chance to circulate, sometimes several 100 km before it works it's magic. Mine certainly took a while to fix the 4th to 3rd down change crunch.

Gavin

[GRP]

Flushing with redline is a pretty expensive way of doing things.
Gavin

I considered going with a cheaper oil for the flush but I had a full 3.9 litre Redline bottle - to play with. First Redline fill only took 1.5 litres with car level. Took it for a drive and then drained it out. I figured a Redline flush gave everything the best possible chance of improvement.

Irrespective of how much it took for the fill I could not physically get anymore into the gearbox unless I wanted to tip the polo up on an acute angle.

Had a good look at the exhaust plumbing whilst under there.

[h100vw]

I considered going with a cheaper oil for the flush but I had a full 3.9 litre Redline bottle - to play with. First Redline fill only took 1.5 litres with car level. Took it for a drive and then drained it out. I figured a Redline flush gave everything the best possible chance of improvement.

Irrespective of how much it took for the fill I could not physically get anymore into the gearbox unless I wanted to tip the polo up on an acute angle.

Had a good look at the exhaust plumbing whilst under there.

I wouldn't worry about tipping it back a little to get a bit more in. I'd certainly go for that over having too little. From you writings, it could be 500ml down in my experience. Which is a fair bit.

Did you leave it to drain a long while?

I jack the front up for access, remove the drain. Drop the car back to level and leave it a while, while doing the plugs or something. Then jack up again and fill. Usually so the wheels are just about to leave the ground, so not that far from level.

Gavin

[GRP]

Final fill with right front corner of car as the highest point was 1.7 to 1.8 litres. I will check it again in a week or so (car will not travel far in that time). I let it drain until it had slowed to a minor weep. I figured that with 2 fills of Redline there would be little of the original oil left even if I failed to fully drain.

Appreciate your input Gavin.

Grant

[hardy_bm]

Replacement gearbox required for GTi

Sorry for the mild thread necro

Does anyone know the dimensions of the gearbox sump plug? And the dimensions of the washer? I'm just ordering some parts to be ready for my gearbox oil change. Will put in a magnetic plug as they seem like a good idea.

Thanks,
Ben

[h100vw]

There's no washer. It's 17mm internal hex

[hardy_bm]

Thanks. I've already ebayed the amusingly large hex socket.

Any idea on the thread spec so I can order a new magnetic plug?

[h100vw]

Ecs sell one for Mk4s. See if they specify it on their site.

[hardy_bm]

Genius. Thanks.

M24x1.5