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Engine
Manufacturers Warrantees
Most
automotive engine manufacturers’ warrantees, including Ford, GM, Volkswagen,
and Mercedes, will not cover engine repairs if biodiesel fuel is used. Some of
these manufacturers were part of the ASTM committee that accepted the biodiesel
specification, but they are reluctant to extend warrantees to engines running
biodiesel, partly because of misinformation presented by advocates of the
"homebrew" approach to biodiesel, which makes a material that will not
meet the ASTM standards. Luckily for farmers, John Deere, Caterpillar, Cummins,
Detroit Diesel and International will warrantee engines using biodiesel as long
as it meets the ASTM standard.
You may be surprised to learn that Ford and Volkswagon do not warrant
repairs if biodiesel is used. This may be surprising since we in Maine have been told that
home made biodiesel is acceptable to these manufacturers.
Importance of
the Proper Process
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