I've had my 300TD in twice to PrairieFire Biofuels Shop. Absolutely phenomenal customer service and repair. Luke is the mechanic, he happily walks you through any services to be done.

Note they specialize in diesel repair. Your MB diesel will be in good hands here-

http://pfbf.typepad.com/prairiefire_biofuels/
PFBF is a member-owned cooperative creating access and building infrastructure to support vegetable oil based fuel sources and usage.

1894 East Washington Avenue
Madison, WI 53704

Co-op and non-profit: (608) 441-5454

Shop: (608) 441-9566

Business Office and Diesel Repair Shop hours:
Monday - Friday 8am-5pm