Achieved 21mpg

Snow White · September 16, 2010

I can confirm that sticking below 70 will get you 20+ mpg, especially if you catch a good draft behind a big truck and keep it out of his mirrors....

420 miles each way, going west from CT to Orchard Park NY I got 20+ below 70

ryan_hermanutz · September 16, 2010

That's pretty good, was that going by the DIC or the old school math way?

cghbuilder86 · September 16, 2010

Yeah that is good! I'd have to keep it well below 70 in my truck. At or below 60 actually.

Kirkathon25 · September 16, 2010

why were you goin to orchard park, im from around there

Snow White · September 18, 2010

bills fan, drove from near hartford out to buffalo, i grew up out near medina/lockport bills fan forever. i don't have dic in my lt truck, so all my math is old school. I've found with our ltz malibu, the mpg isn't accurate anyways, it's off by a couple mpg depending on conditions.

i was pretty happy with that. honestly could've done better if i was by myself and took my time and stayed below 65, probably could've gotten 22. i didn't think it was possible...... but with no head wind it can be done and a good draft behind a truck.

i keep track of every tank of gas and noticed about 1-2 mpg improvement over time, since i ditched the muffler and exhaust beyond it.

RllyDrvrIX · September 18, 2010

umm, I work in OPK and live out near Lancaster... Who all's out here?????

SEVENONESIXZ71 · September 18, 2010

im from cheektowaga yaaaaaaaaaaaaaaaay

05silvycrew · September 19, 2010

4WD or 2WD? good mileage though....biggest thing is to find your trucks sweet spot. mine is about 63-65 MPH, I can make 19 MPG there, if i go up to 70 MPH I drop to about 17-17.5

GasHog369 · September 26, 2010

I'm in west seneca.. about a stones throw away from orchard park

Snow White · October 11, 2010

took another trip down to coatesville pa this weekend, 19.5 going west, 21.2 going east

by the way it's 4wd with 5.3L with active fuel management, Z71 (has the aggressive bridgestone dueller tires), no muffler, short exhaust, and a 3.73 gear ext. cab, 24,000 miles i think. I kept it below 70 and NEVER use cruise.

my tires have 45 psi in the fronts and 38 in the rears... makes a big difference, perfect tire wear too.

Rayaz_XL · October 11, 2010

I achieved 21mpg in my truck yesterday on a trip to Buffalo, for 2minutes! lol Until I realized that i wanted to get there soon. If I keep it at 68mph I can achieve a steady 21mpg, running 44psi in all 4 tires, all-wheel drive.

AzDragonLord · October 11, 2010

my tires have 45 psi in the fronts and 38 in the rears... makes a big difference, perfect tire wear too.

How did you determine that? Is that the max pressure on the sidewalls? Why different between front and rear?

My mileage ain't that good...average 16 MPG on highway with nearly same vehicle as yours...but I'm running my tires at recommended 35 PSI.

jwieps · October 12, 2010

I work in OP and live in Amherst. Ive found that highway driving under 60 mph gets me the best fuel economy - not sitting in traffic by the blue water tower

Kirkathon25 · October 12, 2010

im from eden a lil south but i went to school in amherst

Snow White · October 14, 2010

my tires have 45 psi in the fronts and 38 in the rears... makes a big difference, perfect tire wear too.

How did you determine that? Is that the max pressure on the sidewalls? Why different between front and rear?

My mileage ain't that good...average 16 MPG on highway with nearly same vehicle as yours...but I'm running my tires at recommended 35 PSI.

trial and error, the first thing i do is max out the tire pressure based on sidewall limits on tire, then i back it down based on tire wear.... every 1000 miles i checked it. I've driven trucks my entire life so i have a good idea on the weight differences and how it affects tires. in the winter i will drop it down few psi though for traction.

keep in mind my normal average is between 17.5 and 18.5