According to [these measurements](https://540ratblog.wordpress.com/), Mobil 1 advanced full synthetic (basic Mobil 1) has a film strength of 117,799 psi whereas Pennzoil Platinum's fim strength is only 99,949 psi.
So then **Mobil 1 is better**.
Honestly, as long as you're changing your oil regularly and not putting Autozone branded oil in, it doesn't matter that much. I like Mobile 1 for NA cars.
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.
I've changed my TDI's oil every 10K miles since it was new. It currently has 330K miles on it and runs like a watch.
Did two oil change in a row to get more fresh oil in with the febi and its been running fine for the past 6 month.
but I bought the ECS Oil Kit for the MK7 that includes O-Ring, OEM Filter, Plastic drain plug and Motul oil and it was $55-60 I think.
Liqui-Moly produce good oil in general, in my country all subaru enthusiasts use it for engines also!
I did an oil change last week at 5800 miles and used Mobil1 0W40 VW spec .
I've been hearing lots of good stuff about Rotella t-6 i just changed mine to that the first time this month for the winter
Dark oil is actually a good thing believe it or not. It means that the oil is doing it's job and holding all the contaminants in suspension. In fact if my oil would look clear at the oil change I'd be very concerned and most probably change the brand.
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