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      01-27-2010, 03:08 PM   #38
Mad Linux Guru On The Loose
vasillalov's Avatar

Drives: 2008 335i Sedan
Join Date: Aug 2009
Location: Chicago, IL

iTrader: (5)

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2008 335i E90  [4.00]
Mr. 5,

Here is my comparison between Mobil1 0W-40 and Valvoline Synpower 5W-40.

Things I wanted to bring to your attention:

1. Iron content: you can see it gradually dropping from 30 ppm all the way down to 5ppm.

2. Flash Point: well above 400F and again, a gradual improvement over time.

3. Lead: Again, massive drop compared to Mobil1

That's the kind of stuff that really made the decision for me to stick with Valvoline. Unfortunately, BMW still has not approved the 5W-40 grade although it does meet and exceed the BMW specs. Its a sad thing, because the 5W-40 comes with TBN of 11 and all other grades are TBN of 7 or 8.

For me, the good news and hopes are that Valvoline Synpower 5W-40 is currently PENDING approval by BMW. This is a fantastic oil and can be found anywhere in the autostores.