I personally used to run mobil 1 0w-40. as you said its super thin and seemed to just barely get the job done. Recently switched to castrol SLX 5w-30 and I am decently pleased with the first two changes.
Me...I'll stick to CASTROL EDGE 5w50...over a quarter of a million miles in an actual SCIROCCO.
The engine with the new oil runs so smoothly, I can literally stand a coin on top of the intake manifold and the coin won’t fall.
the info is correct. I find the Castrol and Mobil 1 most consistently at Autozone. The Castrol is called Edge now, I think.
I have an mk4 2.0 Jetta with 87.000 Kms (54.000 miles aprox) and when I bought it it came with 20W50 Quacker State oil in it... I knew it was not correct so I change it with Castrol Edge Synthetic oil... The guy at the shop told me that since VW engines run on high temps the recommend grade was 5w50... So far the oil has been great... There is zero oil consumption, the engine runs smooth and the temps are stable...
Just completed my first hands-on oil change on the GTI; used the German 0W-30 Edge, since VW still owes me one more filter and Castrol oil change in a few months.
A definite 'no' on that. VW says no and it's been shown many times. The factory fill is plain old off the shelf oil (generally Castrol).
Have my best experience with Castrol 0W30 (European $8.99/qt) Minimal lifter noise and run it 5k between changes. Also, use OEM oil filters.
i tryed the castrol edge sport 10w-60 and its working great (very smooth & quiet,etc... any way better than the 4w-40)
always ran castrol gtx diesel 15w-40 in my old 1.5 no real reason but when i bought the car it came with a case in the trunk so i just kept at it. motor never had a problem, and it ended up getting swapped into my buddy's rabbit and boosted.
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