Changing Oil ??

polod

my mum has just bought a 2006 vw golf tdi there is 160k km on it ....i had to bring it back to the garage because it failed the NCT...i was just talking to the owner of the garage who serviced the car since it was new ....and he told me the sump plug was never opened on that car as they pump out the oil.......this got me worried after 5 years there must be a lot of filings in the sump.....the car was just serviced but should i change the oil in it now opening the sump plug to let all the crap out or do them pumps take out all the filings too ? thanks for any views.

si_guru

polod wrote: »

my mum has just bought a 2006 vw golf tdi there is 160k km on it ....i had to bring it back to the garage because it failed the NCT...i was just talking to the owner of the garage who serviced the car since it was new ....and he told me the sump plug was never opened on that car as they pump out the oil.......this got me worried after 5 years there must be a lot of filings in the sump.....the car was just serviced but should i change the oil in it now opening the sump plug to let all the crap out or do them pumps take out all the filings too ? thanks for any views.

The dirt (filings? :eek:) collects mainly in the oil filter, not the sump.

Nissan doctor

Thats the lazy way to do it IMO.
As you rightly say, it won't have drained any build up/deposits which will eventually form on the bottom of the sump.

Also, if they aren't arsed lifting the car to drain the oil you'd have to wonder how well the under side(suspension/exhaust/oil leaks etc) is being inspected during these services.

deandean

@polod I used a sucker-out-the-dipstick on my Volvo for a couple of years and I kid you not I saw a gradual deterioration in the state of the oil being sucked out. Last time after I used it I opened up the sump plug and a further 1.5 litres of oil came out!

I reckon the success of these units depends on the arrangement & location of the dipstick tube -v- lowest point in the sump.

I still use the pump to remove most of the oil (for convenience) but I always drain out the dregs via the sump plug.

kona

Even opening the plug doesnt get rid of alot of the crap, I was suprised at the sludge and general gick at the bottom of the engine when I took it apart. The metal swarf tends to accumilate on the sump plug if its magnetic, theres a surprising amount of that too.

Nissan doctor

kona wrote: »

Even opening the plug doesnt get rid of alot of the crap, I was suprised at the sludge and general gick at the bottom of the engine when I took it apart. The metal swarf tends to accumilate on the sump plug if its magnetic, theres a surprising amount of that too.

Sludge build up over time is normal but metal swarf is not. If you have visible swarf then something is not being lubricated!

kona

Nissan doctor wrote: »

Sludge build up over time is normal but metal swarf is not. If you have visible swarf then something is not being lubricated!

Thats what I thought, maybe why the engine needed to be rebuilt, its second oil change, first after road driving is next week so we will see what the story is there. Since its a fairly old engine design, Id expect a small amount of swarf but not alot.

Oh its a mini, so the Gearbox and Engine share the oil, Id imagine most the swarf is from bad gear changes.

voteforpedro

is it common practice now for garages to pump out the oil instead of opening the sump plug? never knew such a thing existed!! how do you make sure they do it the 'correct way'?

-Corkie-

voteforpedro wrote: »

is it common practice now for garages to pump out the oil instead of opening the sump plug? never knew such a thing existed!! how do you make sure they do it the 'correct way'?

+1 as Nissan doctor said its a lazy way allright. I always use the sump not because with the gush of oil coming out a lot of the would be crap will flow out.

A lad I know turns on his car for 2 seconds after the oil is drained to let out the last bit. I wouldnt chance it though..

dr.fuzzenstein

-Corkie- wrote: »

A lad I know turns on his car for 2 seconds after the oil is drained to let out the last bit. I wouldnt chance it though..

:eek:
That just has bad idea written all over it.
Tell him to put some Cif into the oil to really clean that engine.:cool:

Compton

you could run that engine cleaner then put oil in it.