Originally Posted By: Bob The Builder
Quote:
I will say that oil analysis results do show Mobil 1 to be average at best in wear control going by used oil analysis.
With that said, why is Mobil 1 hyped as such a great oil then? I was using it and felt that my engine was not running up to par. I ended up changing over to the oil that starts with A and have noticed a fair increase in felt performance and a mile or so increase in mpg's. I also happened to pass smog. Honestly, I did not make one other change to my truck besides run the engine flush made by the company that starts with A.
Sorry. I didn't want to come across as a crazed Amsoil supporter. It just happens to be my new fav oil.
1. It is not uncommon for a simple oil change to make or break an e-test on a vehicle that is close to the line. A change of the same brand and grade of oil; just the fact that it's FRESH oil can do this.
2. If you felt a difference between up to par and not, with just an oil change for a different BRAND (with the viscosity remaining the exact same), then I think your "performance meter" might be feeding you lies IMHO. Perhaps you WANTED to feel a difference?
3. I've got over 1,000,000Km on various grades of Mobil 1. I have never noticed a performance variance between different BRANDS of the same grade. But I have in going from different WEIGHTS of oil; from 5w50 to 0w20 for example in my Mustang. My Lincoln (car with miles in my signature) passed E-test blowing almost ZEROS across the board. And it's not the oil. It's simply a well-maintained engine. My 1987 GT passed E-test (barely) with no catalytic converters and no pollution pump. And that wasn't the oil. It's a well maintained engine that now lives-on in my Capri.
4. Amsoil is an EXCELLENT product. I have used it myself in various applications and have nothing but good things to say about it. But like those who go overboard supporting Royal Purple, I think some people THINK there is a bigger difference than what there really was. They WANT to feel/hear a difference. Just my opinion. And this applies to any oil.