I have a w reg A4 2,8 q which has FSH and has now covered 111 000. Plan on doing an oil change, which oil should I use, Audi tell me it has to be fully synthetic, but which weight should i use and why also which is the recommended brand to use.
Guy: I've pointed out before that thing is flawed, and it seems you've still not done anything about it.
According to it, i should be running an S4 on 10w40 semi-synthetic, and the oil i'd choose for an S4 (Silkolene Pro-S) doesn't even get listed as an option. Not only is semi-synthetic a crap choice for a bi-turbo V6, but it would probably be extremely bad for the engine if it happened to be on long life servicing.
well thats not very good if the selction of suitable oils recommended by your site isnt actually what youd recommend personally. it would be good if it gave people an indication of how long it could stay in there for
10w40 would be "ok" in an s4 but you wouldnt want that to stay in too long as im sure it would burn pretty easily
All A4's after 2000 got variable servicing, so 2000 and 2001 S4's will most likely be on longlife, unless the owner chose to disable it.
You should know that theres a huge difference between the oil that the engine requires, and the oil the manufacturer says is acceptable. The whole reason these VAG engines are so bad for sludge is entirely down to putting semi-synth oil in a turbocharged engine and leaving it there for 12000miles. Can you honestly say from your experience in the oil industry, that a semi-synthetic oil is suitable for a twin turbo petrol V6?
Given your taking the opportunity to come onto this forum, replying to threads, and that your presumably fully aware of the oil issues these engines have, you should be recommending appropriate oils, not the oils that created the sludge problem in the first place.
agreed. its so sad to see an engine sludged upNo turbocharged engine should be on long life servicing, full stop.
Thanks guys. How short an interval & where does one find this quantum synta is it only available in one weight or many, if many which is recommended?
Thanks guys, OK so I will use 5w- 40 fully synthetic with a new filter (any recommendations for the filter?). Any need to do an engine flush, its done just over 5000 miles since last service