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CG Motorsports - Dual Friction Clutch & DMF Review

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Try changing the gearbox fluid

Makes a nice difference

VAG state that gearbox fluid is a lifetime oil which is a load of baloney! The lifetime to VAG is the 3 year warranty period

Also you can try a gear linkage reset which may help

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  • Did the advise you to go for this setup? a standard clutch/dmf would have been fine running 170/300lb

  • Which says 70/75 synthetic is the manufacturers spec. and almost certainly NOT what CG would have put in it.   If they even changed it.   I have no idea why people keep changing gearbox oil, synth

  • Why not just call them in the morning and give them a chance to put it right before posting here any more, they've obviously disturbed an ABS sensor, the wiring or reluctor ring while removing the dri

  • Author

Apparently CG have done a gearbox fluid change as part of the clutch and flywheel replacement!

Will try the linkage reset though.

Id check they put the correct grade oil in

The 6speed box is very particular about what oil goes into it. Could possible be the wrong grade which is why your struggling when cold

Apparently the 6speed box can use either

75/90 or 75/80

75/80 is meant to be better from cold. Maybe worth checking and replacing with this

That doesn't make any sense since 75 is the cold viscosity rating which is the same for both, 75/80 is almost a straight grade heavy mineral oil, 75/90 is a synthetic.

 

More likely they botched the linkage when refitting the gearbox to be perfectly frank.

Do you have to change the gearbox oil when changing clutch and flywheel? Like does it physically seep out when you remove the components? Just wondering as I wasn't charged for any oil when I had mine done a few months back and wondering if it has been changed.

No its not needed nor does it have to be done

Thanks for that mate, looks like i'm going to be doing mine asap then. No idea when it was last done!

Which says 70/75 synthetic is the manufacturers spec. and almost certainly NOT what CG would have put in it.

 

If they even changed it.

 

I have no idea why people keep changing gearbox oil, synthetics are good for the life of the gearbox, it's not like it's going to be polluted with combustion products and fuel like engine oil, if you lose a little over time just top it up, it's not rocket science.

Edited by sepulchrave

I changed the gearbox oil on my lupo gti

It was notchy and generally crap. Worse so from cold.

The old oil that came out was as black as the ace of spades and stunk to the high heavens.

With the new fluid it was like having a new gearbox. Was as smooth as silk

New fluid is surely going to be better than some 10 year old stuff

Edited by BigJase88

I changed the gearbox oil on my lupo gti

It was notchy and generally crap. Worse so from cold.

The old oil that came out was as black as the ace of spades and stunk to the high heavens.

With the new fluid it was like having a new gearbox. Was as smooth as silk

New fluid is surely going to be better than some 10 year old stuff

 

Not if it's the wrong grade! You had a perfectly good reason for doing it, you rolled the dice on a crap gearbox which is fair enough but changing it when there's no reason to other than 'I wuv mi car so much' is senseless and frankly a bit feminine.

  • Author

Have any of you got an idea what the issue is with this traction control light coming on exactly 10 mins after the ignition is switched on? Is it something simple?

Gear oil does get contaminated. Plus its good practice as you may have metal bits in there from gears plus the syncros wear over time and the material is held in the oil.

Depending how the box is removed you do get leaks. There is a valve on the top of the box. But only minimum amounts are lost. Its a pleasure valve I think.

Lol sorry meant pressure valve

Not if it's the wrong grade! You had a perfectly good reason for doing it, you rolled the dice on a crap gearbox which is fair enough but changing it when there's no reason to other than 'I wuv mi car so much' is senseless and frankly a bit feminine.

New fluid with the correct grade

Have any of you got an idea what the issue is with this traction control light coming on exactly 10 mins after the ignition is switched on? Is it something simple?

 

Yes, it means the ECU has disabled the traction control and the light is to remind you that it's turned off.

 

It does this when it senses a problem with the MAF or the ABS sensors.

  • Author

Gear oil does get contaminated. Plus its good practice as you may have metal bits in there from gears plus the syncros wear over time and the material is held in the oil.

Depending how the box is removed you do get leaks. There is a valve on the top of the box. But only minimum amounts are lost. Its a pleasure valve I think.

One thing CG did mention to me is that they checked the gearbox oil to see if it was breaking down. Not quite sure how you do that, but based on your comment, I believe this is how they tested it.

  • Author

Yes, it means the ECU has disabled the traction control and the light is to remind you that it's turned off.

It does this when it senses a problem with the MAF or the ABS sensors.

Think I've found the fault - http://www.seatcupra.net/forums/showthread.php?t=209472

I have a VAG diagnostic machine and it keeps reporting 'Load Signal Errors'. Wondering if some wiring is broken somewhere!

Gear oil does get contaminated. Plus its good practice as you may have metal bits in there from gears plus the syncros wear over time and the material is held in the oil.

Depending how the box is removed you do get leaks. There is a valve on the top of the box. But only minimum amounts are lost. Its a pleasure valve I think.

 

I like the sound of a pleasure valve!

 

Contaminated by what please? Any steel fragments from wearing gears and synchro rings sinks to the bottom of the gearbox and does not remain in suspension, the oil is not pumped, it's a bath, everything is lubricated by splashing. You're 'imagining' these problems, its what we engineers refer to as 'intuitive' engineering i.e. not backed up by facts.

Sounds very possible

Probs got broken when the box was out!

I like the sound of a pleasure valve!

Contaminated by what please? Any steel fragments from wearing gears and synchro rings sinks to the bottom of the gearbox and does not remain in suspension, the oil is not pumped, it's a bath, everything is lubricated by splashing. You're 'imagining' these problems, its what we engineers refer to as 'intuitive' engineering i.e. not backed up by facts.

Could you explain why the oil goes black...

One thing CG did mention to me is that they checked the gearbox oil to see if it was breaking down. Not quite sure how you do that, but based on your comment, I believe this is how they tested it.

 

I know how you do that. You send a sample of the oil to Swansea Tribological Services for analysis, it's not cheap though and you might not understand the reply.

Could you explain why the oil goes black...

 

Usually from oil seals breaking down, that and oxidation of the additive pack, however I have never seen gearbox oil that was black like you describe, I expect to see a silvery sheen during the intial drain as metal flakes from the bottom of the gearbox drain out first, the rest usually comes out clean.

I know how you do that. You send a sample of the oil to Swansea Tribological Services for analysis, it's not cheap though and you might not understand the reply.

I have also done this too!

But i have no idea

Was oil from a 33kv tranny at a power station. Every year it gets tested

Im the numpty who takes the samples

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