Is biodiesel OK for Duramax?
Is biodiesel OK for Duramax? General Motors announced on February 8 that its new lineup of heavy-duty diesel pickups will have B20 biodiesel capability. GM's new Duramax 6.6-liter turbo diesel engine has been substantially revised to include B20 capability, as well as meet strict new emissions standards effective this year. What is wrong with biodiesel? The most common problems with fuel quality are (1) the biodiesel may contain some "unconverted"vegetable oil (incomplete processing), (2) traces of chemicals from the making of the biodiesel (e.g., methanol, lye) can remain in the biodiesel, (3) products of the reaction (e.g., glycerin, soaps) may...