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Originally Posted by jpat I too have had a decrease in mpgs with the standyne performance so quit using it and went to lucus oil additive, it gets me a mile ar a little more so its better than a decrease in miliage | I admit I initially saw a mpg drop too,I find every other or 2-3 tanks is enough Stanadyne.The truck will see 22 on hwy,if i am behaving and using treatment every 2-3 tanks,rather than every tank.[I observed this while unloaded and not towing  ]...So i just don't use it as often.
__________________ MINE2006 GMC 2500HD4x4 sb cc LBZ!  Got a couple lil mods,more to follow 
[color="Blue"]02 GMC 1/2 ton,2wd,5.3 power{Mama's ride}
87 SS Monte Carlo 77k[orig!]
78 Malibe [2dr.]350/350 WORK RIG:03 YukonXLHypertech tuned!! 310k miles! The left lane is used to pass,so get over,or we'll run over ya asssss!!1996 Impala SS on the way!!! |