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yes i factor in propane.
propane is a tricky thing to measure. if you look at it by a purely miles per gallon basis, it does get less mpg's then gas. by a good amount too. the thing is, propane is significantly cheaper then gasoline. so although the mpg drops a bit, the actual cost per mile also drops (because its reduced cost more then makes up for its reduced mpg's). so i try to adjust the mpg i tell people to accurately reflect the "true" mpg when taking into account its cost. that's where i get 40mpg from.
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96 stratus "es" v6 auto-stick
supplementary propane injection
injector kill switch, alternator kill switch
Charging system voltage increased to 15.5V
secondary and tertiary 12v batteries in the trunk
on-board battery charger
lights converted to led's
potentiometer controlled tps for ign timing
welded straight pipe in place of cat-cons
removed egr
3 inch body drop
90psi fuel rail & -50% low volume injectors
run 15% diesel 85% gas
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