Amsoil made the engine idle much smoother than any of the other oils have but every oil I've used but Mobil has been good as far as life and burn-off goes.
I have apr stg2 and i change my oil every 5k with mobil1 5w30 and it never burns a drop!
mobil 1 5-40 diesel truck blend has it, just referenced my blackstone labs report after 6k miles was still over 1000
Over 50k big turbo miles on Mobil 1 10w 30 full synthetic. I love the oil, try some 10w 30 :thumbup:
I've been using amsoil for the past 2 oil changes. No complaints, car seems to idle a little better and cold start sooner.
I'm not really too sure about the weights, but I highly recommend using specially formulated euro blend oil. I believe that is 0W-40. I personally only use mobil 1 euro blend. It is expensive but your engine is not the place to get cheap.
I switched it to Mobile 1 high mileage, and no more smoke, and it now, I kid you not, burns less than 1qt/3-4k miles!
I have a 2010 VW Jetta 2.5 with 48,000 miles todate. The dealer used Castrol and on the last change Valvoline. Now I'm doing my own oil changes etc. Currently using Mobil 0w-40. Since I've had the car the oil level drops so little on 10,000 changes that I can't measure it. The last oil change included 4,700 miles of hot Interstate driving. After it was changed I had the oil tested and basicly it had a lot of life left. Looks like the 2.5 is very easy on oils.
I also started using it in my bike after switching from Mobile 1, and it's the best thing I've experienced so far with the wet clutch, keeping the shifting very smooth.
When we tested Mobil 1 on the racecars on the dyno Mobil 1 freed up 6-9 hp over other oils using the same Ford viscosity - 0w/20W.
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