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Gas mileage comparison data...

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1986F150Six

Gas mileage comparison data...

Administrator

This post was updated on .

Having just returned from the 2019 Garagemahal Truck Show, I need to update this data. One consideration for this year's data is that I had a passenger. Also, part of this year's aerodynamic modification [card board tube grill cover] had to be removed after the show, before the return drive, due to water damage caused by the heavy rain.

2014 55-62 mph with no aerodynamic modifications = 21.93 mpg [highest tank = 23.26 mpg]

2015 55-62 mph with aerodynamic modifications = 24.13 mpg [highest tank = 25.72 mpg]

2016 55-70 mph [weighted towards 65-70] with aerodynamic modifications = 22.05 mpg [highest tank = 23.46 mpg]

2017 Missing data due to having driven another vehicle.

2018 65-75 mph [closer to 75] with no aerodynamic modifications] = 19.87 mpg [highest tank = 21.3 mpg]

2019 65-75 mph with aerodynamic modifications = 21.65 mpg [highest tank = 21.95 mpg]

2019 60-75 mph with partial [see explanation, above] aerodynamic modifications = 19.12 mpg [highest tank = 21.17 mpg]

Gary Lewis

Re: Gas mileage comparison data...

Administrator

David - What conclusions do you draw from that? And can you tell much difference for the MPG on the way here vs the return? Meaning with/without the aero mods?

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

1986F150Six

Re: Gas mileage comparison data...

Administrator

I lost ~2.5 mpg without the grill deflector. Also, there was more tank to tank variability without the grill deflector.

Gary Lewis

Re: Gas mileage comparison data...

Administrator

I thought that was it. And the variability is probably due to either speed differences having a bigger impact or side/head winds doing it. Or both.

Gary, AKA "Gary fellow": Profile

1986F150Six

Re: Gas mileage comparison data...

Administrator

Look at the 2014 vs. 2019 [with full aerodynamic package] data!

Gary Lewis

Re: Gas mileage comparison data...

Administrator

Big speed difference. Standing still aero doesn't help at all. At Mach 1 it helps bunches.

Gary, AKA "Gary fellow": Profile

Danny G

Re: Gas mileage comparison data...

Do you have pictures of your aerodynamic modifications?

1986 F-150|Standard Cab|4x2|300Six|C6Transmission w/3.08 rear|Name:TBD
2021 Ranger XLT Super Crew

1986F150Six

Re: Gas mileage comparison data...

Administrator

TheScatch wrote

Do you have pictures of your aerodynamic modifications?

Open the 2019 tab.

http://www.garysgaragemahal.com/ford-truck-show.html

Danny G

Re: Gas mileage comparison data...

Oh I see it now!!

1986 F-150|Standard Cab|4x2|300Six|C6Transmission w/3.08 rear|Name:TBD
2021 Ranger XLT Super Crew