Engine oil Mobil or Pentosin

0-40W here all year round in Chicago 138k miles and still going strong

I just changed my oil and filter on my 2006 GLI 2.0T. I used Mobil 1 15w-50 and a MANN filter purchased from the VW Dealer. My best friend is an awesome Audi/VW tech and he advised me that was fine combo.

On the 16v I had I also had a cyl head temp gauge and temps dropped from 240F to about 210F when I switched from Mobil 1 to AMS, so did my oil temp drop fromt eh 250 to 215 range.

i use mobil delvac 1 5w40 synthetic oil in my 2000 beetle tdi.

did my first oil change 2 weeks ago, put Mobil1 0w-40 in... and I'm getting better gas mileage than I was on the factory oil

I used to run Mobil 1 5w30 and switched to GC. There was a nice difference, with only one side effect - the engine feels super sluggish when cold compared the Mobil 1. It runs great once warmed up though!

I've used Mobil1 (0w-40, 5w-30), Shell RotellaT (5w-40) and Castrol Syntec (5w-30) past 100k miles. Before 100k, it had whatever garbage the dealer put in. Engine still runs like a top with great fuel economy and no unusual oil consumption at 203k miles.

I'll continue to use my Mobil 1 0w-40 for another 4 years.

Mobil 1 does make 5W-40. I use it. They label it Truck and SUV but don't let that throw you-just a marketing ploy. I switched from 0W-40 and my oil temps are slightly lower. My car is not winter driven so I don't need anywhere near a 0w. If I remember correctly 5w-40 is thinner than 0w-40 above freezing anyway.

same here in IL - 132K still going strong