Engine oil Mobil or VALVOLINE

I ran this fill from mid Fall through the winter until 4/14/03. I filled up with about .25 of a qt 3000 miles into the interval. Analysis done by Blackstone Laboratories. Total miles on oil: 4,886 DAVID: Although we expect an engine’s break-in period to be past by about 10,000 miles, we suspect that the 5 ppm lead we found in this sample is from lingering wear-in. Upper-end wear (see aluminum, chrome, and iron) looks great. Lead should decrease in the next sample, as should silicon, which is leftover sealers used at the factory. Insolubles were good at 0.4%, showing your oil filtration system is getting the job done.

i use 5-50 non mark (mobil 1) my egine dont sound and my car dont need that weekly oil refilling any more

castrol 5-50 synthetic in my vr6 passat , 5-40 mobil-1 delvac in my TDI passat.

Due to the higher milage on my motor I run synthetic 15W-40 (Mobil 1) year round.

I use regular, dino, Mobil 10W-40. I got so many miles on my Passat(185,000), that I don't using synthetic Mobil 1 would help much.

you can buy Valvoline Synpower at any NAPA Auto Parts Store.

Just go out and buy Valvoline SynPower 5W40...

Running Mobil 1 15-50. This is my 'cue' to relax when on the track.. I run 260-280F all day long...at the track (LRP and Watkins Glen)

I ran 15w50 for a year, and my car ran at least 10 degrees hotter all the time, than when I switched to 5w40.

I am the person who posted those Valvoline 5w-40 vs. Mobil 1 10w-30 results long ago and started spreading the word about this oil and where to find it. The results show that the Vavloline 5w-40 is a very good choice for this motor. The last sample had nearly 9,000 miles on it, and the oil was well within viscosity and oxydation tolerances for 5w-40, and labeled suitable for continued use. Further, after 9,000 miles, wear metals were very low.