Engine oil Mobil or OEM FORD

I run Mobil-1 0-40 in the winter to 4 or 5k miles, in the hard driving months I use their 5-40, and change it once or twice a month.

I use Mobil 1 0W40, and have been going 4000 miles between oil changes.

just use Mobil1 0w40 or Castrol 5w40...both can be found at autozone and are 502 approved

Now i can notice a smoother iddle and the car seems to pull more even in the RPM. So far so good i'll trust MObil 1 till my next oil change but always be aware of what those dealership are doing seems like a big ripp off to me !!!

Easiest to find is Mobil 1 0W-40, Porsche's recommended fill.

I use mobil 1 0w40 and it makes a big difference

0w - 40 Mobile 1 was all I used for over 3 years, and the R was flawless until I sold her.

I use Mobil 1 0w-40 in my car (1.8T) because it is readily available, VW approved, has good performance and a decent price.

Mobile1 Full Syn 15w50 for my VR. I would like to think that if you changed your oil every 3000 miles under normal driving conditions than regular oil would be fine. Since I have some modifications and like to drive it like I stole it--sometimes-- than a better oil is good insurance.

On that note, I currently have tried VW Oil from the dealer, Mobil 1, and Kendall Fully Synthetic and have determined that Mobil 1 5W-30 is the best mass-market oil out there to use. I run it 10,000 miles and the motor is as smooth as ever.