If their that good why doesn't Mercedes recomend you use them in their cars? Do you think there is a product out their they have not tested in their cars? I don't like snake oil's I tried injector cleaner once in my Camry, it smelled like diesel! Never noticed a difference. Here is what MB recomends: Only Mobil One in the crankcase, and high octane gas in the tank. I know fuel injector cleaner screwed up the egr in my friends S600. It ran fine, till the stupid dealer dumped some in the tank. $600 later everything was better.
