Engine oil VALVOLINE or Pentosin

5W-30 Valvoline SynPower (full synthetic) and Mahle filter since I picked this car up at 89k in '11. Just cleared 175k last week.

I think what helped as much is the valvoline oil. Valvoline really agrees with my motor. Not sure why I have trouble with some of the other blends, but it's really quiet with the ashland add-pack.

Valvoline VR1 non synthetic. It is one of the ZDDP oils. Reasonably priced and the Z seems to like it.

[Valvoline SynPower](http://www.valvoline.com/products/brands/synpower/full-synthetic-motor-oil/5) is what I have run since I purchased my 2012 Subaru Legacy.

I bought a 5 Liter Bottle of Pentosin SAE 5W-40 Pento High Performance II Motor Oil from O’Reilly Auto Parts for $50.75. This API SN/CF and ACEA C3 Rated Oil complies with VW-Specification 502 00/505 00/505 01 and is Made in Germany.

I like pentosin and motul

Pentosin is pretty cheap and good quality, thats what Ive been using the past couple years.

I have a 08 2.5 Been using Pentosin 5w-40 so far so good

Anyway, when I had my Passat 1.8T and sludge issues were the big fad, my oil of choice was Valvoline Synpower 5w40. It met 502 and was not a synthetic blend but rather a real synthetic.

I use valvoline because it's common and it does the job. My auto mechanics instructor also recommended it because he said most of the engines he'd taken apart that had run valvoline looked pretty crud free.