I have a 85 280SL Euro with 62K on it and started using Techron fuel additive in it about a year ago. I have noticed a measurable improvement since I started using it. My question is: I also have 2004 E320 wagon with only 34K on it and of course it is a very different vehicle from my 27 year old 280SL so is it ok and would it be benificial to also use Techron in my 2004 wagon? If so how often? .....Thanks Desert