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sludge

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by Gt Tdi_, Feb 18, 2013.

  1. Gt Tdi_
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    Gt Tdi_ Member

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    Not another general...help, sludge! thread....

    Picked the avant up on Friday and it's sat on the drive all weekend till being dropped at garage this morning. True 54k (every old mot etc) miles with no bill for cam belt so spoke to previous owner who confirmed he's not changed the belt since he's owned it which was around 1.5-2 years old :ohmy:

    I went for the low mileage car as it had a great spec, definately original miles (history and all mots) and just as importantly a bill for £1,100 back in Dec'11 (8k miles back) for a de-sludge (new pick up, oil pump, flush and full service etc) - previous owner also confirmed no problems since.

    Anyway, car in for the cam belt and had a call and the oil sludge I'd assume had even affected the hydraulic/manual tensioner which had seized (its hydraulic and oil fed) - add to that the impellor had partly broken (orig plastic type) - all not a problem as has been caught 'just' in time (impellor bit recovered etc).

    Garage said either it would have overheated soon or the tension on the belt would have gone ......

    As well as the cam belt, tensioner, water pump i'm having the car flushed then refilled with 5/40 quantum (he said he'd use 'DT' flush which he's never heard any problems from - add to existing oil, run up for half hour then drain and re-fill with new oil and filter). On top of this i will do another oil change from garage during easter break then regular changes each six months (around every 6k miles).

    Could be worth also checking cam belts if you have problems with sludge in the future (perhaps this car is a one off)?

    Any thoughts?


    Extra £200 on top of the bill but piece of mind and looking forward to enjoying the car (and getting a few new oil service stamps in book over next year)..


    To do:

    Refurb wheels;
    Possibly new clutch before France/Spain late summer (it's very high and don't want any hassles overseas - is this £350 or £700 depending on DMF replacement and is that likely requirement at 54k miles....guess it could be);
    Replace the 4th tyre with a Goodyear Eagle F1 (all others are pretty new and F1's);
    Either a mop or spray of front wing to get rid of some deep'ish scratches from washing (suspect some grit on sponge at some point).
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  2. T0m
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    T0m Member

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    The sludge issue is a good topic on here mate, me Ive changed my oil and filter evey 12 months or 10k which ever comes first Ive had my car for 6 years this year and no issues thus far its just one of those things.

    But listening to people on here id steer clear of flushing as it has the potential to cause the very issue you are trying to stop, just a regualr oil service is just as good and when you choose to do it is up to you fella.

    My local Independant Audi specialist recommended to me not to have the pick up pipe changed as a preventative measure if its working ok and that if the engine warning light comes on dont drive it just get it towed to them for the work to be done. Their reason was the sump is a bugger to seal properly in there experience (dont shoot me thats what they said to me).
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  3. Gt Tdi_
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    Gt Tdi_ Member

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    I'm tempted to stop garage running flush in the morning (was there at 5.30 having a chat and they were due to flush, run car and drain oil tomorrow).

    I kinda agree, if the engine was sounding sweet (top end) and running fine (no overheating or issues driving it 50 miles back round M25) then leave well alone and simply change oil every few k for the next year - especially as its run great since sludge 8,000 miles back.

    I'll try and stop the flush first thing, if i cant then i guess i'll end up getting the engine cleaned and worse case 'sludge works' done again...either way i'll find a way to justify to wife (or hide bill):slap:


    Thanks for reply...
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  4. Enzo_UK
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    Enzo_UK New Member

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    Yes its hydraulic, but its a sealed unit, so doesnt get engine oil pumped into it.
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  5. Gt Tdi_
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    Gt Tdi_ Member

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    Enzo - thats really interesting - thanks very much.
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  6. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    What ngine is in it?
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  7. Enzo_UK
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    Enzo_UK New Member

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    From the mention of sludge my first guess would be 1.8T, but from the user name maybe its a TDi
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  8. crazy88
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    crazy88 Loving the anonymity

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    It's a 1.8T, he posted a few days back with a thread on his new car. That's the only advice I can offer :undwech:
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  9. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    Its what confused me. I assume we are talking of the chain tensioner rather than the cam belt tensioner as that is in no way connected to the oil system. It's a self contained item. That said, it is advisable to change them when doing the cam belt/WP kit anyway. Just be aware the "blocked tesioner thing" is incorrect if refering to the belt tensioner
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