Question:

Hey guys,     While everyone is still reeeling from the amount of MPG related posts in this newsgroup (no, I don’t understand it either…they’re TRUCKS).  Anyway, I thought I’d throw my hat, or gastank as it were, into the ring.  What’s the best way to achieve maximum mileage on the highway.  I’m gonna assume that you should sit on the lowest revs possible in high gear, this is logical yeah?     I can sit at about 90km/h at about 1800rpm; does this achieve better mileage than sitting on 100km/h at 2000rpm?     Actually, I suppose it doesn’t matter, ‘cos I’m gonna speed anyway.  I just thought it to be quite interesting.     By the way, I make no apology for using metric.  You buggers should have followed the rest of the world…away…AWAY from imperial I say…evil foul creature.  16 somethings don’t make 1 anything, except in imperial measurements.     Oh well. I will ponder these quandarries whilst waiting for my bowels to move. Deeeeep in thought. Well, deep in something. Probably stinky. BK

Response:

– Hide quoted text — Show quoted text -> Hey guys, >     While everyone is still reeeling from the amount of MPG related posts in > this newsgroup (no, I don’t understand it either…they’re TRUCKS). Anyway, > I thought I’d throw my hat, or gastank as it were, into the ring. What’s > the best way to achieve maximum mileage on the highway.  I’m gonna assume > that you should sit on the lowest revs possible in high gear, this is > logical yeah? >     I can sit at about 90km/h at about 1800rpm; does this achieve better > mileage than sitting on 100km/h at 2000rpm? >     Actually, I suppose it doesn’t matter, ‘cos I’m gonna speed anyway.  I > just thought it to be quite interesting. >     By the way, I make no apology for using metric.  You buggers should have > followed the rest of the world…away…AWAY from imperial I say…evil foul > creature.  16 somethings don’t make 1 anything, except in imperial > measurements. >     Oh well. > I will ponder these quandarries whilst waiting for my bowels to move. > Deeeeep in thought. > Well, deep in something. > Probably stinky. > BK

I got the best mileage I ever got out of my Explorer at 75MPH. When I moved back to the Western U.S. the speedlimits went up. I usually got around 18.5-19 MPG at 68MPH. With the speed limits set at 75 here, I get 20.5 MPG. You will have to do the conversions yourself from our imperial measurements. It doesn’t always hold true that you want the lowest RPM with the lowest gear ratio. You want your engine to work at its most efficient level. The only way to determine what it is, is to try it yourself. Robert Share what you know. Learn what you don’t.

Response:

My experience (based on the fact that I’m on my third leased Explorer) shows that cruising along at 80-90km/h and 2000 rpm or less translates into a commendable highway MPG. Gas might be cheap in the USA, but it’s not in Canada thanks to our wonderful taxation system. Stephen 1998 Explorer XL [4wd, 4-door, Michelin LTX M/S, etc] > I can sit at about 90km/h at about 1800rpm; does this achieve better > mileage than sitting on 100km/h at 2000rpm?

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Response:

- Hide quoted text — Show quoted text ->My experience (based on the fact that I’m on my third leased Explorer) >shows that cruising along at 80-90km/h and 2000 rpm or less translates >into a commendable highway MPG. >Gas might be cheap in the USA, but it’s not in Canada thanks to our >wonderful taxation system. >Stephen >1998 Explorer XL [4wd, 4-door, Michelin LTX M/S, etc] > I can sit at about 90km/h at about 1800rpm; does this achieve better > mileage than sitting on 100km/h at 2000rpm?

There are so many variables here that one can only make general observations. Here are some of the variables involved: Engine type;body style; transmission type; final gear ratio; tire size; tread style; tire pressure. I had an F-250HD SC w/460 & 4.10:1 that got better mileage at 75 than at 55 mph. Bill Funk    "When I read about the evils of drinking, I gave up reading."         – Henny Youngman

Response:

Stephen, where abouts in canada do you live? I’m in Edm, AB. And yes the taxation on gas is horrible! – Hide quoted text — Show quoted text – >My experience (based on the fact that I’m on my third leased Explorer) >shows that cruising along at 80-90km/h and 2000 rpm or less translates >into a commendable highway MPG. >Gas might be cheap in the USA, but it’s not in Canada thanks to our >wonderful taxation system. >Stephen >1998 Explorer XL [4wd, 4-door, Michelin LTX M/S, etc] > I can sit at about 90km/h at about 1800rpm; does this achieve better > mileage than sitting on 100km/h at 2000rpm? >–

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