VeeDubb, maybe this makes sense...
For the first 3 yrs. or so, I always brought my own M1 0w40 to the dealership. Then, after VW instructed its dealers to use synthetic on the 1.8t, I just let the dealership put there own oil in, which was supposedly Syntec 5w40. So perhaps I should switch back to M1?
There is some positive commentary about using MI 5w40 TDT in the 1.8t, but I can't see where it meets VW 502.00. What are the difference between the two M1s?
are you considering the TDT? I am thinking of dropping that in (after gaining a little more knowledge about it in these engines) maybe before it gets hot again in the spring to quiet the engine down. Mine seems kind of loud at high speeds, no idea if it's the oil or just the fact that the engines sit at high rpms on the highway.