Gear Box Oil Change

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tristan
B4
Posts: 393
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Passat model: b5
Location: Manchester

Gear Box Oil Change

Post by tristan » Sat Mar 27, 2010 10:47 am

just hads the gear box oil changed on my b5 pdtdi

its done 180,000 miles now, i understand the oil is lifetime and shouldnt be changed.

but it has made the gearchange a little smoother, and put my mind at rest.

has anyone else on here changed the gear oil. any comments on doing this

adamss24
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Re: Gear Box Oil Change

Post by adamss24 » Sat Mar 27, 2010 7:24 pm

Thats because the old oil is slightly thicker. I have changed gearbox oil in some of my cars and i would not bother next time. I would only change if the box is notchy from cold or if the first, 2nd and reverse are difficult to select without grating noises.

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dodge
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Passat model: b5.5

Re: Gear Box Oil Change

Post by dodge » Sun Mar 28, 2010 8:21 am

got my 170,000 mile old "lifetime" gearbox oil drained in my old Passat and replaced with the exact spec as reccomended by VW dealers.

Many VW dealers refused to do this job saying it isn't needed the gearbox oil lasts forever. Several quoted me 2 hours labour. Found a local Audi specialist who did it in an hours labour

Going from 1st to 2nd gear my gear stick would crunch in like no gear was in place, 2nd to 3rd would be sticky trying to engage 3rd and 4th to 3rd gave me trouble getting 3rd gear in. (all of this is made worse when its cold outside and the car has been sat overnight)

After reading through many threads on TDIclub I settled on the G52 911 A2 as reccomended by VW for my 1.9 130 PD 6 speed manual.


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VERY thin, runny and light like a hot honey

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Now the original stuff came out a dark gloop and started to seperate when left to settle for more than a minute




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Dropping into 2nd gear is now smooth and positive (if I do it very fast there is a slight notchy feeling, but nothing like before where it sounded like I was chipping gear syncros on long grinds no matter how slow I shifted)

2nd to 3rd works everytime and a minimal knock.

4th to 3rd so far has worked everytime

VW don't state the viscosity of their new G052, but it seems very thin, my shifts used to be worse when cold and when the oil warmed up and thinned became better. This new stuff is thin from the outset so could that be the solution?

Either way a new gear box is £2000, a refurb £500, or a rebuild £600. A refurb doesn't even gaurentee other syncro's/gears won't play up.

So for less than £100 it seems a good mod.

adamss24
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Re: Gear Box Oil Change

Post by adamss24 » Sun Mar 28, 2010 10:23 am

The oil i have drained off me audi's was nothing like that but a slyghtly darker hue than the one that went in. It was however thicker than the stuff dealer supplied me with ! As i said, i wont bother with changing the oil in MY cars unless there are difficult to select gears... I have done dozens of gearboxes and in none was the oil contaminated like that, unless someone filled with the wrong spec oil Dexron II, III ?) .

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Phatass
B3
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Passat model: B5
Location: Devon

Re: Gear Box Oil Change

Post by Phatass » Sun Mar 28, 2010 10:33 am

anyone know the part number or grade required for the 1.8t box ???
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drainaudio
still on the production line
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Re: Gear Box Oil Change

Post by drainaudio » Sun Mar 28, 2010 5:22 pm

dodge wrote:got my 170,000 mile old "lifetime" gearbox oil drained in my old Passat and replaced with the exact spec as reccomended by VW dealers.

Either way a new gear box is £2000, a refurb £500, or a rebuild £600. A refurb doesn't even gaurentee other syncro's/gears won't play up.

So for less than £100 it seems a good mod.
Spot on..
Preventative maintenance is the best mod ever invented..

I should have my B5.5 Passat within the next few weeks and despite buying at the top of the market with low miles & FVWSH it will immediately be getting my usual 2nd hand post-purchase treatment.
New Bosch battery
4 x new tyres - Vredestein.....brilliant and very economical
Wheel alignment
Upgraded headlight bulbs (looked into HID kit but will see the results of standard first)
All fluids and filters changed - anything else on the consumable front that the VAG specialist recommends

Some of the above may happen as part of the purchase price post VAG specialist pre-sale inspection, I'll just have to see what deal I can strike at point of sale.

Since I bought my first car as a teen this has always been my brief when buying 2nd-hand (couple of new cars in that time, obviously no need) and was wisdom handed down from my Grandfather a 30 yr veteran of the british army engineers core (used to design systems for warships etc).
I have never had to rebuild an engine, gearbox or diff - considering I've bought the most well cared for examples I could find, this along with my "servicing" brief means I've enjoyed said vehicles always operating at peak efficiency.

Can't go wrong with over-servicing in my view and ill continue down that road - I can understand the concept of long-life for modern engines and longer coolant change intervals based on modern lubricants/additives/tolerances, but you are still changing those fluids every few years. A sealed component that never needs new lubricant - pah - I wouldn't want a diff or gearbox to be running with the same lubricants for more than 5 or 6 years max.......that's a lot to ask as it is........change it, the piece of mind is well worth the hassle.....(even if just to see the dirty oil doesn't have any metal filings in it).
;)
Last edited by drainaudio on Sun Mar 28, 2010 5:30 pm, edited 1 time in total.

ezzysi
B2
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Passat model: B5.5

Re: Gear Box Oil Change

Post by ezzysi » Sun Mar 28, 2010 5:23 pm

Changed mine @ 90k miles (pdi 130 5 speed)

Changed it because the 1st to 2nd change was really crunchy when cold and still quite bad when warmed up, the old oil was similar to dodges photo above though maybe not quite as bad.

After changing it the gearchange is 90% improved, with only a slight crunching if I try to change too quick when its cold.

Would def' recommend it for the £45 the oil cost if your going to keep your car long term (On mine I had to buy a very large "star bit" about 18mm I think, to undo the drain and fill bungs on the box but there not all like that)

drainaudio
still on the production line
Posts: 19
Joined: Thu Feb 25, 2010 10:42 pm

Re: Gear Box Oil Change

Post by drainaudio » Sun Mar 28, 2010 5:27 pm

adamss24 wrote:The oil i have drained off me audi's was nothing like that but a slyghtly darker hue than the one that went in. It was however thicker than the stuff dealer supplied me with ! As i said, i wont bother with changing the oil in MY cars unless there are difficult to select gears... I have done dozens of gearboxes and in none was the oil contaminated like that, unless someone filled with the wrong spec oil Dexron II, III ?) .
That's the other reason I'll always replace "all" fluids when purchasing a vehicle - you just don't know what has been put in there, bad day at the factory, bad day at the garage etc etc..

It's pretty obvious once you've driven several of a particular model exactly how they should feel/sound to drive so if the example you purchase is 100% and you've also had the thumbs up from a marque specialist then changing all the fluids so you are sure of what's present is just good sense IMO.

Much cheaper than the alternative of a poor maintenance breakdown on the side of a French mountain in the middle of winter........nightmare!!!! :D

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