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The truck currently has 47,000 miles and the mileage has crept up to 19.2. 2012 Super Crew Lariat with the 157" wheelbase. 5.0 Coyote. 3.55 limited slip. I have NO complaints.........
Just shy of 90,000 miles now and trip meter II reads 19.3.
Well, I always drive between 45-65 unless the speed limit is less, I have a new 2011with a 5.0 and 201000 miles, I though my truck was running good but miles wise I was from 14-17.2, to me that is a littler low since I'm not a fast driver... so I decide to check my plugs since I don't know much about the truck... I was chock when I see the sparkplug
[QUOTE=EDDLG01;4937136]Well, I always drive between 45-65 unless the speed limit is less, I have a new 2011with a 5.0 and 201000 miles, I though my truck was running good but miles wise I was from 14-17.2, to me that is a littler low since I'm not a fast driver... so I decide to check my plugs since I don't know much about the truck... I was chock when I see the sparkplug it was at around .072 gap... replace the plugs at .045 gap and I feel the different on how the truck ride, only 1 day of driving...
My 2008 Lariat SuperCrew with 5.4L automatic 4x4 is averaging around 13.5mpg per tank, mixed driving. I hoped swapping the larger tires back to stock size, and going from Nitto Terra Grapplers to Michelin LTX A/T would help a little. Nope, no change. That was disappointing. I figured at least 1mpg improvement in the tires alone. I assume the dual exhaust is probably killing the mileage at this point. Going to swap out for new plugs in the next week or so. I'm cautiously optimistic that this helps. I think I should be getting 15 or so, at least.
My 2008 Lariat SuperCrew with 5.4L automatic 4x4 is averaging around 13.5mpg per tank, mixed driving. I hoped swapping the larger tires back to stock size, and going from Nitto Terra Grapplers to Michelin LTX A/T would help a little. Nope, no change. That was disappointing. I figured at least 1mpg improvement in the tires alone. I assume the dual exhaust is probably killing the mileage at this point. Going to swap out for new plugs in the next week or so. I'm cautiously optimistic that this helps. I think I should be getting 15 or so, at least.
I have 265/70/17 street tires and I try not to step on the gas, can wait for o longer trip to see what it shows
Well, I always drive between 45-65 unless the speed limit is less, I have a new 2011with a 5.0 and 201000 miles, I though my truck was running good but miles wise I was from 14-17.2, to me that is a littler low since I'm not a fast driver... so I decide to check my plugs since I don't know much about the truck... I was chock when I see the sparkplug it was at around .072 gap... replace the plugs at .045 gap and I feel the different on how the truck ride, only 1 day of driving...
I have no idea when they were change but they were change a least one time cause it didn't had the Motorcraft 528, this is what it had Motorcraft CYFS 12Y plus I found a small engrave #LTR6A113 JAPAN. I trace that # an it is a NGK Spark plug... So I believe that Motorcraft spark plugs are made by NGK...
The NGK was $3 more than the Autolite and Motorcraft and in the reference from NGK it shows the Autolite
