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Seasoned...
Joined: Sat Oct 21st, 2017
Location: Near The Pointy End , USA
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The MPG listed the 5.0L Explorer at 18MPG the 4.0L both 2wd/4wd were quoted as 20MPG and although not all information is possibly true, current, or not misleading and or manipulated in some way. I find that Edmunds may not be 100% accurate.
Although the HP may be more on the SOHC version 4.0L I do find it possible that even at 20MPG dragging a Explorer carcass around, 2 more miles per gal would seem easily obtainable in something almost a 1/4 less in weight - Therefore showing an improvement in power to weight factors lending to MPG.
My lesser and slightly under powered 93 4.0L OHV has gotten mid to higher ends of 22.4-22.9 MPG on a few occasions. But not at any time I was driving it to enjoy it or just enjoying it. Especially taking the canyons (Ortega Hwy California) to go from Riverside to Lower OC to visit family and friends... Man those RT615ks gripped good.. sometimes I had really needed it!
The 4.0L OHV is basically a stroked out 2.9L Nothing too fancy, just ended up being a better engine than the 2.9L original design.
My assumption was you were already running a 4.0L...
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