Re: 6x6 fuel ..puzzled

Posted by Gary Mckenzie on November 29, 2004 at 11:56:41 from (65.142.156.108):

In Reply to: 6x6 fuel ..puzzled posted by Play farmer on November 29, 2004 at 08:19:20:

The multi-fuel engines use a specially designed combustion chamber as well as a "fuel density compensator" built into the injection pump. There is a relationship of btu's and viscosity of different fuels (thinner/lighter fuels have fewer btu's than thicker/heavier fuels for a given unit of measure). The density compensator simply adjusts the amount injected based on viscosity. Starting in the late '80's, most engines had the density compensators bypassed as the military phased out gasoline tactical vehicles, so I wouldn't recommend running anything other than diesel in one now. The chief complaint with civilian use of these trucks is the lack of power, they have less than stellar performance at highway speeds, but on unimproved roads in combat zones (where they were designed to operate) they have more than enough power. Sorry for being long winded!
Gary Mckenzie-U S Army 1986-94, mos 63G-Fuel and Electrical Systems Repairer.

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