Hi everyone looking for some thoughts on an issue I've been having for some months now re oil consumption on my S4.
I purchased 2013 B8.5 S4 in June 2022. It had 88k on the clock and had been serviced at the garage I purchased it from for the past 5 years and has FSH. Everything was fine with it then in Nov 22 the minimum engine oil warning light came on and it was topped up by the garage I bought car from as a couple of minor issues were being fixed under the 6 month warranty.
Since Nov 22 I've had to top up oil about 5 or 6 times. Its been back at the garage I bought it from who confirmed no oil leaks on the 2 separate occasion's they have looked at, last time April 23 when it was getting main service which included new spark plugs installed, and nor are there any puddles of oil on my drive way (which is on a slight slope in case thats relevant).
The car will hit the 100k mile mark this week and I've just put another litre of oil in about 600 miles after the last lot. The oil I've been using is Comma Pro1 Prolife fully synthetic 5w 30 which seems to be fine for Audis according to garage that sold me it. When the minimum engine oil warning light comes on, if I open and close the bonnet without adding any oil then the light goes off for maybe 100-200 miles before coming back so wondering could it be a faulty sensor somewhere?
Any other idea what could be causing this issue and how concerned should I be about it? The garage seem to think that as its a larger 3 litre V6 engine (previous largest engine id had was 2.0 TDI A4) then it will go through more oil and didnt seem overly concerned about this. However I'll stress i'm not mechanically minded at all but this didnt sound right to me but happy to be corrected if anyone thinks this could be the case?
Given my lack of mechanical knowledge and not getting far with the garage, a spot of googling has led me to think it could be one of the following (although Id have hope the garage would have eliminated these on one of the instances they were checking the issue) -
Piston rings issue/ piston con rod issue. If its one of these then I'm assuming that's expensive to establish and then fix?
Leak in coolant
Water pump issue - positive the service history shows this was replaced around the 75k mark though
Oil pump filter issue
Faulty sensor somewhere
I've noticed there is a 40 page thread on this sub forum started in 2015 regarding oil consumption in 2009 - 2011 models so any chance it could be related to this?
Any thoughts and advice greatly appreciated before I go back to garage and get them to check for things that potentially could be expensive but not help me solve the problem. Or is it the case that given mileage and engine size of car then this is actually normal? Unlikely I know....
Thanks in advance
I purchased 2013 B8.5 S4 in June 2022. It had 88k on the clock and had been serviced at the garage I purchased it from for the past 5 years and has FSH. Everything was fine with it then in Nov 22 the minimum engine oil warning light came on and it was topped up by the garage I bought car from as a couple of minor issues were being fixed under the 6 month warranty.
Since Nov 22 I've had to top up oil about 5 or 6 times. Its been back at the garage I bought it from who confirmed no oil leaks on the 2 separate occasion's they have looked at, last time April 23 when it was getting main service which included new spark plugs installed, and nor are there any puddles of oil on my drive way (which is on a slight slope in case thats relevant).
The car will hit the 100k mile mark this week and I've just put another litre of oil in about 600 miles after the last lot. The oil I've been using is Comma Pro1 Prolife fully synthetic 5w 30 which seems to be fine for Audis according to garage that sold me it. When the minimum engine oil warning light comes on, if I open and close the bonnet without adding any oil then the light goes off for maybe 100-200 miles before coming back so wondering could it be a faulty sensor somewhere?
Any other idea what could be causing this issue and how concerned should I be about it? The garage seem to think that as its a larger 3 litre V6 engine (previous largest engine id had was 2.0 TDI A4) then it will go through more oil and didnt seem overly concerned about this. However I'll stress i'm not mechanically minded at all but this didnt sound right to me but happy to be corrected if anyone thinks this could be the case?
Given my lack of mechanical knowledge and not getting far with the garage, a spot of googling has led me to think it could be one of the following (although Id have hope the garage would have eliminated these on one of the instances they were checking the issue) -
Piston rings issue/ piston con rod issue. If its one of these then I'm assuming that's expensive to establish and then fix?
Leak in coolant
Water pump issue - positive the service history shows this was replaced around the 75k mark though
Oil pump filter issue
Faulty sensor somewhere
I've noticed there is a 40 page thread on this sub forum started in 2015 regarding oil consumption in 2009 - 2011 models so any chance it could be related to this?
Any thoughts and advice greatly appreciated before I go back to garage and get them to check for things that potentially could be expensive but not help me solve the problem. Or is it the case that given mileage and engine size of car then this is actually normal? Unlikely I know....
Thanks in advance