I’ve been running T6 5w40 on my deleted mk6 for about 100k km. Last winter I ran T6 0w40 because it got really really cold. I’m running 20k km oil change intervals. The oil is hard to see on the dipstick for quite a while when new. From the non existent EGR? I like T6 because I was using it it in all my vehicles, atv, small engines. The newest mix of T6 however they have removed the API Rating for gas engines, and I’m not smart enough to know why so I’ll likely stop using it in those applications but keep it in the TDI. I liked Buying it by the 5gal pail also. I’ve never done an oil analysis so I could be destroying my stuff I suppose. Also, Canadian Tire or my nearest Walmart do not carry VW507 oil, and the nearest dealer is 4 hours away so not using it is kind of convienent!!