ok thanks again for all the help...

i am off to help my buddy with his house 14 hours from here... i was hoping to take the mercedes on its first trip, but it will have to be the next one... i put about 10L of bio-diesel in to half a tank of regular ol' stanky diesel, so i guess that makes it about 25% mix?

will try to find the prefilter under the battery when i get back, get all that changed out, get it insured and let you guys know the results...