Re: 2 litre petrol engine oil consumption –
03-03-2013,01:08 AM
Originally Posted by
nilocp
...where is the oil going, and why?
My gut feeliing is it is burning it in the usual way (valve stem seals or piston rings - probably piston rings for the quantity you're talking about). The reason you're not seeing it is that the Audi engines have close-coupled catalytic converters with very high light-off temperatures. These are very good at cleaning up the smoke from the exhaust.
Two real world examples are that my very first Audi was an Audi 80 Sport with a 2.0 "Tall Block" engine that used to drink oil like petrol. The tailpipe was litterally spotless (you could run your finger around it with no carbon) but one day the downpipe sheared. I found out where my oil was going; as under the bonnet (before the CAT) the exhaust was smoking like an old hag, together with that acrid burning oil smell.
Secondly, my current A4 B8 has just had the pistons and rings changed under warranty because of high oil consumption. Again clean tailpipe and no smoke at all. The new pistons and rings have done the trick.
MY2009 A4 Saloon 2.0 TFSI quattro S-line Exec - Aruba Blue, 19" alloys, Convenience Key, Sunroof, Adaptive Lights, Anti-dazzle Folding Mirrors, Rear Sun Blind, Heated Full Leather with Memory, Storage/Light Packs, Audi Hold Assist, Adaptive Cruise Control, Parking System Advanced, Privacy Glass, Rear Airbags, TPMS. MMI 2G with B&O Sound System, DAB Radio, DVB TV, AMI and Bluetooth Phone prep High with Privacy Handset.
