Veggie Oil Conversions


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  • 1984-1986 D50 Diesel- Mitsubishi Mighty Max

These little trucks at great fuel efficient trucks that get over 30 mpg usually.  They have been known to have head issues, so beware when you are buying one or fixing one.   These trucks are made by Mitsubishi and had powerful little turbo diesel engines.  Nissan also made a small diesel truck during this period but they were non turbo, but they also didn’t have the head issues and had better parts availablility.

  • 1989-1993    2500 & 3500

Dodge diesel pickups in these years came with a 5.9 liter Cummins turbo diesel and the Bosch VE rotary fuel injection pump.  These trucks are tough and these engines will run forever.  The Bosch VE injection pump is prone to failure on vegetable oil if it is not 100% dewatered and also if the oil is not flushed properly. 

  • 1994-early 1998 2500 & 3500

*Highly Recommended*  The5.9 liter Cummins turbo diesel engine in this model use fuel injection pump called the P7100 Bosch inline injection pump.  This pump is the same style of pump found on the older Mercedes diesel as well as most of the older Japanese diesels and is far superior to other style injection pumps for running the diesel engine on cooking oil.  Therefore, these years of Dodge Cummins are ideal for running on used cooking oil.

  • 1999-2002

*Not Recommended Unfortunately, we do not recommend using vegetable oil as a fuel in these years of Dodge Cummins.  Cummins uses an injection pump called the VP44 in these years and this pump is a weaker rotary pump that is temperature sensitive and does not hold up long term to cooking oil conversions.

  • 2003-2006
*Recommended*  The Dodge Cummins engine uses a common rail fuel delivery system during these years and is compatible with vegetable oil conversions.  These trucks are fast, fuel efficient, and powerful.



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