I have a VW Parts/Service shop a couple of blocks down the street from me. I took a walk there to see what type of oil they stock. They had everything Mann has for VW/Audi's. They stock mostly Pentosin oils. The usual 5W-40 VAG flavor. They also stocked Pento Speed 0W-30. They want $45 for the 5 liter jug. I had my UOA done of my 07 Altima, and Blackstone said I could do once a year OCI's on my car. It's past break in, and I only put about 7K per year on it. My question is. Is Pento Speed worth the $20-$25 premium over Mobil 1 and Pennzoil Platium? I know some Pentosin oils are Group III and GIII/GIV mix. I believe the 0W-30 is group IV only.