Re: GAS Mileage - how to make it better.
I have a 2wd, 5.3 v8 with the mods listed in my sig below. I'm using Castrol Syntec 10w-30 and wix filter with a 4-4500 mile change interval. I'm averging 16-17 mpg.
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2004.5 Silverado 2500HD 4X4, LLY, Banks 6-gun/speed brake/intake, Dual bypass oil filter, 4" exhaust, 265/75R16 Bridgestone Dueler A/T Revo2, AirLift airbags, AMSOIL in everything!
84k miles/30NOV11
Yeasu 857D/ATAS-120A - "When all else fails..."
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