4.7 fuel economy study

[Brian Mills]

OK, 2000 miles or 3000 km first highway trip. Approximately 275 miles each way, first leg driven like a retard, what can I say, I want to get there. Speed is 70-90 mph on average, let it go on one straight a way, she hit 200 kmh, or 125 mph.

Comments- shifted out of 3rd into OD at 185 kph, 115 mph approx. pulled fairly hard in OD at that speed I was impressed.

Let off just before 200 kph, did not run into any sort of governor.

Speed is as indicated by speedo, I will re-check thesae numbers at a later date with GPS.

Trip home, 460 km as measured by the trip meter. Speed 65-75 mph, a few short bursts to 85-90 mph for passing, all done with gentle throttle pressure, no radical down shifting. Fueled on the way out of Edmonton, re-fueled on the way in to Ft. McMurray, 73 litres consumed. 17.5 miles per gallon. Direct translation to US milage is 14 mpg, US gallon is 20% smaller than imperial.

Currently Durango has 4.7 and 235x 70 R15 tires. I am considering a tire change to 31x10.5x15. I did this exact change on my 1991 318 4x4 and went from 14 mpg to 18 instantly.

Any other results here?

Brian

[Rob94hawk]

Went to Pensylvania and drove 300miles and still had about a half a tank left. Sounds like over 20mpg.

I'm betting the RedLine 5W-30 helped a lot!

Sorry I can't give more specifics.

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2000 4.7L Dodge Durango (Patriot Blue)
Mods so far: RedLine oil

1994 Pontiac Firehawk #157 (BrightRed/Ttops/M6)
ET: 13.69@101.9 stock
(if you don't count the K&N,airfoil,&160thermostat)

Long time member of www.camaroz28.com