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Originally Posted by Quicksilver
I don't pretend to know. But I would expect a supplier who's selling a product to tout their product as better than the others. And it may be. I have never used it.
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Guess I should have put that as "Do you think there is a difference?" I do. I'm not pretending to know or anything but I figure if these 4 major car companies, BMW included, did this study to set some standards for detergents in gasolines that would keep your engine cleaner it might be wise to use the brands they approve. Especially if you don't have to go out of your way to do it. I switched from FINA to QT and actually save money too.
Of course it could all be propaganda, but I don't think so. What would the car mfg.'s have to gain? Gas companies can save serious bucks by reducing the amount of detergents they use in their product. Until this report all they had to do was say they had detergents in their gas, never how much.