So first post, been doing alot of research and learning about oil more. It seems to be pretty important for audi twin turbo 4.0 engines to get something exceptionally good. Many a turbo has been blown pre 50k on these as well due to the sludge and oil screen issues. People have seemed to resolved it with engine flushes and 5k or less oil change intervals. They also run very hot with lots of heat soak and turbo coking potential and if you drive hard consistently oil disappears uncomfortably fast and is said to be "normal". Audi U.S. recommendation is vw 502 505 5w40 high saps HTHS 3.5+ with up to 10k changes.
VW 504 507 low saps is looking like it is less likely to create sludge issues so I'm naturally interested but its not recommended in the U.S. I heard that Audi in Europe recommended they use 504/507 5w30 in these with low saps as though this is what its meant to run on but I'm not sure this isn't a rumor. Is it really ok to do low saps stuff here in the U.S. with the 5k change?
Its worth mentioning I will mod the car too and beat on it frequently I'm sure (my 2nd modded 4.0) and its getting way up there in horsepower and heat with the two turbos so I'm naturally a bit concerned about going the extra mile. I'd like to stay within the recommended oil but it seems like its sub optimal for this car at best.
So if I stick with recommended vw 502/505 I'm thinking motul 5w40 x clean gen2 to or x cess gen2 not sure which is better.
Also thinking racing oil might be best with 3k change 5w40 motul 300v or torco sr5r. I am skeptical/nervous about using race oil for daily but I do drive really hard alot so maybe its best
I wish there was something more clear cut. Any ideas?
VW 504 507 low saps is looking like it is less likely to create sludge issues so I'm naturally interested but its not recommended in the U.S. I heard that Audi in Europe recommended they use 504/507 5w30 in these with low saps as though this is what its meant to run on but I'm not sure this isn't a rumor. Is it really ok to do low saps stuff here in the U.S. with the 5k change?
Its worth mentioning I will mod the car too and beat on it frequently I'm sure (my 2nd modded 4.0) and its getting way up there in horsepower and heat with the two turbos so I'm naturally a bit concerned about going the extra mile. I'd like to stay within the recommended oil but it seems like its sub optimal for this car at best.
So if I stick with recommended vw 502/505 I'm thinking motul 5w40 x clean gen2 to or x cess gen2 not sure which is better.
Also thinking racing oil might be best with 3k change 5w40 motul 300v or torco sr5r. I am skeptical/nervous about using race oil for daily but I do drive really hard alot so maybe its best
I wish there was something more clear cut. Any ideas?