Have you advanced the timing? Advancing the timing improved my fuel economy. I also add 1 oz of 2 cycle oil for every 2 gallons of diesel to keep everything lubricated and improve fuel economy.
Enthusiast
Have you advanced the timing? Advancing the timing improved my fuel economy. I also add 1 oz of 2 cycle oil for every 2 gallons of diesel to keep everything lubricated and improve fuel economy.
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive
-Upgraded Holset HX-35 turbo
-NP205 iron transfer case
-3.73 gears
1982 ½ ton Chevy Suburban
-6.2L diesel - high nickle crack free 1982 block
-Stans headers
-Ported heads
-Timing gear
-4 speed automatic
-3.08 gears
-30 mpg on freeway
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