hey was wondering if anyone can answer TMAllison's questions now. I have my 99 E300 in the shop for the first time replacing a leaking O ring. I bought the car in hopes of using biodiesel but when i talked with the guy that owns the shop he told me he wouldn't run biodiesel in these cars because it could cause injector problems and there is a high probability of ruining them and it is expensive to replace. He did say he has not had any MBs have that happen but the VWs and said it is something to do with the newer computer controlled cars. I got this guys' name from research on this forum and he seems to be well respected in the area for these diesel cars, been doing this for over 20 years. He hasn't replaced the O ring yet and i'm wondering if i need to tell him to replace it with these Viton things that i keep seeing in posts? Anway, i'm getting a little uncomfortable now with thinking about using biodiesel and it bums me out.

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99 E300DT
07 Hummer H3x
04 Chev Avalanche 2500
78 Pontiac Trans Am