Engine oil VALVOLINE or MOTUL
Valvoline SynPower Full Synthetic 5W-40, VW502 approved. I use it in our '07 A4 (over 100K miles) and plan to use it in our '16 GSW.
Motul Xcess full synthetic
5W-30 Valvoline SynPower (full synthetic) and Mahle filter since I picked this car up at 89k in '11. Just cleared 175k last week.
I use Motul 300V Power 5w40 for my Stage 2 tuned S5 3.0 TFSI.
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.
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.
I just changed the oil with 2,960 on the odometer. This is the car's first oil change. Used zero oil since new. New Mann filter and Motul 5-40. Can't prove it but I swear it runs better.
Initially I used Mobil 1 0w-40 for the first few oil changes... Engine Idle was sort of noisy for a car that had less than 50k miles. What made me switch was when I opened up my oil cap on 2 different occasion to see smoke come out. After that I switched to Motul. With motul the power deliver was more smooth, less aggressive. Engine idle was quieter. The car felt slower but the engine overall seemed healthier. Most importantly i havn't exxperince smoke after opening the oil cap since switching over.
It might be due to a difference in oil viscosity. With usage the Motul oil has sheared down to 30 weight which makes the engine run more freely and cooler as compared to fresh Castrol which has not accumulated enough hours to lose viscosity. It's been well documented that a viscosity decrease lowers oil temperature.
Valvoline VR1 non synthetic. It is one of the ZDDP oils. Reasonably priced and the Z seems to like it.
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