mws Posted December 18, 2006 Share Posted December 18, 2006 More data is required, but I was shocked at the last fill up. When using the newer Pathy for around town jaunts, I was getting about 12 to 13 mpg. Last night, I noticed I had well over 200 miles, which normally meant I was about due. But the gas gauge still read over 1/4. Hmmm.... maybe a gas gauge issue? So I stopped and filled up... Took only 13 gallons. That means, wow! Over 15 mpg with 100% in town driving! All I changed was the fluids and wheels/tires. The oil, TC, transmission, and rear diff were changed over to Mobil 1 and Redline. And I pulled the steel wheels with 31x10.5-15 Cooper STT's to put on the winter tires/aluminum wheels in a P255/70-16. These work out to be almost exactly the same size, but about 15 lbs per wheel lighter. I will monitor carefully and let you all know if the improvement continues. Link to comment Share on other sites More sharing options...
94extreme Posted December 18, 2006 Share Posted December 18, 2006 yes, my mpgs are better in town too. pathys seem to like lower rpms for best fuel efficiency. keep us posted. Link to comment Share on other sites More sharing options...
Trainman Posted December 18, 2006 Share Posted December 18, 2006 Tires can have a huge impact, especially when going from/to a real grippy AT or mud tire to a less aggressive street type tread pattern. May have something to do with it? Link to comment Share on other sites More sharing options...
5523Pathfinder Posted December 18, 2006 Share Posted December 18, 2006 Synthetic oils create less drag on moving parts, which means the engine doesnt have to work so hard. And if you removed 15lbs at each corner, thats 60lbs overall. Less weight equals less effort. Right on! Link to comment Share on other sites More sharing options...
Harbinger Posted December 18, 2006 Share Posted December 18, 2006 Nice Martin! I can imagine all that helping though. 15lbs per wheel is a lot less to get rolling in stop-n-go traffic! Link to comment Share on other sites More sharing options...
gxl90rx7 Posted December 18, 2006 Share Posted December 18, 2006 im getting about 15-17 mpg right now, but im about to change out the diff and transfer case fluids. hopefully it will get better Link to comment Share on other sites More sharing options...
mws Posted December 19, 2006 Author Share Posted December 19, 2006 I knew there would be some improvement, but the 25% was a shocker. From a theoretical standpoint, I think the tires make more difference. I'll find out in the spring when I put the heavy wheels back on. I'll make sure to do some careful mpg checks now, and then a couple tanks with just the wheels. Link to comment Share on other sites More sharing options...
DJ Dank Posted December 19, 2006 Share Posted December 19, 2006 I'm looking to change out the oil in the diffs and the transfer case...never had them done since I bought the vehicle at 60k and I'm at 103k. :o Link to comment Share on other sites More sharing options...
BLouisGod Posted December 19, 2006 Share Posted December 19, 2006 The unsprung weight made a huge difference for you. I went from alloy 17's on my car to forged aluminum and i gained 5 mpg on the highway - pretty crazy results by losing 5lbs per wheel. Link to comment Share on other sites More sharing options...
zonianbrat Posted December 19, 2006 Share Posted December 19, 2006 Wow that is some big MPG gains just by a little weight reduction!! HHHMMMM makes me wonder how else I can shave lbs beside aluminum wheels!!! Keep us updated!! Link to comment Share on other sites More sharing options...
govols74n Posted December 19, 2006 Share Posted December 19, 2006 no kidding, Im going to kick out my windows, get 4 donut spares to ride around on, rip out all but 1 seat,remove the bumpers, hood, spare and roof rack.....I think this will help some. -bounce- -bounce- Link to comment Share on other sites More sharing options...
DJ Dank Posted December 19, 2006 Share Posted December 19, 2006 no kidding, Im going to kick out my windows, get 4 donut spares to ride around on, rip out all but 1 seat,remove the bumpers, hood, spare and roof rack.....I think this will help some. -bounce- -bounce- Don't forget ALL the interior panels...all you want is a bare metal interior! Link to comment Share on other sites More sharing options...
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