What oil are you using in your TDI and why? I found bunch of info on people saying that i have to only order oil from Europe to run in my VW and that it has to meet their 505.00 specs. In US oil for European cars is much more expensive and cost almost double of what i pay now. I've also run in to some info about people using Delvac 1300, Valvoline Blue Extreme and Delo 300 with no issues for a long time. And since i already have Delvac 1300 Super for my Cummins, i really don't want to keep buying 3 different oils for all my cars. I do change oil and filter every 5k religiously. I've done oil sample test on my 01 cummins (100k miles) with blackstone labs and they told me oil is good to go for atleast 2500 more. But i still change to make me feel better. So the questions are....... What year is your TDI? What oil do you use and how long have you been using it? What works for you?