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.
Edge 5w-30 did great for me. It's a great product, turning in the best 1.8t UOA I ever saw. There are PLENTY of great products dirt cheap on our shelves. I personally feel SynPower is most worth of my money, on a full price basis. Otherwise, I'll buy any other NAME BRAND synth when its' $4 or so. I actually nabbed a bunch of Quaker State 5w-40 from BigLots for $4ea. QS is a sleeper oil, esp at the right price. High moly too, great for break-in.
I used Edge in my APR 2.0TSI over winter, did a lab report and wear was minimal, actually the same as a Motul 5w-40 sample from the same mileage.
GC 0W30 is PAO based oil. PAO and Ester based oils are much more stable and clean engines much better. People who need 502.00 approved oil simplly LOVE that thing!
I am sticking with 0W30. Plus, it is better for cold start, which is one of the most important things!
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