Which drain plug for oil change

[peter goble]

Looking at doing a oil change on my A6 7.7 tdi Quatro (2007), there are 2 drain plugs, what are they both for?

[gupsterg]

As mine is a 2005 V6 TDi it has the bigger sump plug (yours will differ size/look) but location should be same on yours.



Green lines oil level sensor, red circle engine oil drain plug.

[peter goble]

As mine is a 2005 V6 TDi it has the bigger sump plug (yours will differ size/look) but location should be same on yours.



Green lines oil level sensor, red circle engine oil drain plug.

Out of interest what is the other drain plug?

[gupsterg]

Are you talking further back?

[peter goble]

Yes the one further back

Are you talking further back?

[gupsterg]

Is yours auto? if so the very first one when going further back is the ATF oil drain and further back is the refill point.

[peter goble]

Is yours auto? if so the very first one when going further back is the ATF oil drain and further back is the refill point.

Yes mine is Auto

[OVI82]

Looking at doing a oil change on my A6 7.7 tdi Quatro (2007), there are 2 drain plugs, what are they both for?

You've got the biggest Diesel engine out there(7.7)��������.
On a more serious note it would also be a good idea to replace the sump plug alen key bolt when changing the oil.You'll notice it has a silver washer that gets squashed when tourqing the bolt up to create a seal between head of the bolt and the bottom of sump.I did my oil yesterday and changed it.It's only £2 or £3 for a new bolt and the silver washer should come with oil filter.Good luck.

[Guest 2]

Get it from Audi parts, they're not dear <£5.

[Big_Jim]

Can you tell me what size hex socket it needs? I have a 3.0 tdi v6.