D2 Gearbox Oil Change

[notorious]

Originally Posted by sarg

my experience of doing this on a D2 is that you need roughly TWICE the capacity to flush out the old fluid properly as you will lose some of the new fluid flushing out the old - it's impossible to only flush out old fluid, so I'd say you need to buy double the capacity

I'm planning oil change on D2 and I wonder how much fluid I need. I purchased 10 liters. I understand for full fill aprox. 9.8 ltr. is required, whereas geabox is sump capacity approx. 3.5 to 4 ltr, so the rest of fluid is in the 'system' -- not in the sump. Now how do I fully drain fluid from the system if I want full flush? I never done this before and I have only read this article: http://www.audipages.com/Tech_Articl...servicing.html

Or do you mean I need 20 liters (TWICE the capacity) to to flush out the old fluid properly?

[ainarssems]

As DIY you can only change whatever is in sump without removal of gearbox and torque converter. Full change/flush needs specialist equipment and takes around 12l.

[notorious]

>> Full change/flush needs specialist equipment and takes around 12l.

Can I read somewhere about that specialist equipment? Specifically, how it works and who has it? I hope the approach doesn't include complete removal of gearbox, torque convertor and oil cooler from car and completely draining every single pipe.

[IT]

http://www.transcentre.co.uk/splus.html

Check out 'service plus'

[notorious]

Interesting link -- thanks.

Too much pseudo-scientific jargon for me, i.e. ''incorporates the latest micro computer technology that allows us to do all the necessary internal adjustments", etc. My brain is too small to understand that. If this is a breakthrough in gearbox oil change technology it should be everywhere. At least, people should talk about it, dealers should actively sell it, there must be a wikipedia article about how invention works, etc.

I tried to google for TECH-TRONIX 300 / 355 and it seems no one in the world knows about this product except that garage. Even on web site of 'CASEY ENTERPRISES' which 'exports' this equipment there is no trace of information about the technology or a product.

I'm not saying that it doesn't exist in reality. It must be extremely rare stuff

EDIT: I also found an idea of disconnecting oil cooler hose to flush the system completely: http://www.amsoil.com/faqs/ATF_and_F...Procedures.pdf (step 13), but it is a manual process -- it doesn't involve any state-of-art canadian-imported equipment.

[IT]

It exists, I had my 4 motion passat done there years ago and watched them do it....

[notorious]

Perhaps I should go there too !

[Architex_mA8tey]

We are hoping to have a meet up there at unit 20 and also Chester transmissions (Mike was trying to organise both around a weekend we have penned in the diary). May well get my gearbox done at that meet by the now famous "sucky pumpy squirty thingamajig" so you could come along and partake or watch Sergey!

[ainarssems]

I think what they do is heat up the transmission to working temp so that thermostat opens, drain the sump, fill with fresh oil. Then hook up the "sucky pumpy squirty thingamajig" in the transmission radiator loop to collect dirty old oil from there and start the engine, Machine then measures amount of oil collected and pumps the same amount of fresh oil in at the same time. You can see extracted oil either through clear tubing or a window and when you see fresh oil coming out you know all oil has been changed. I suppose they might be heating up new oil as well to keep thermostat open during procedure.

[notorious]

yes, this is what I thought they should do. Break circuit at oil cooler and insert the magic machine there. Then basically drain old oil and pump the same amount of new oil.