Originally Posted by Big Jim

I"ve come to a loose conclusion that the fuel is being mixed with something that affects newer Benz diesels. As i stated earier in this post, my wife's 97E300D has a very noticable drop in mpg s and my 85 300SD shows no change, I think this is a regional thing where certain regions do something to their fuel. Others on this site are getting good mpg s on their 96 or 97 E300D's . How many different refineries are there in this country? Are they dilluting it with something after it leaves the refineries ? Just shooting from the hip here, but what is going on? Jim