Did a Tune Up WOW!
#11
Senior Member
I would disagree with this statement, although I could also be guilty of the same effect.
I changed out my plugs around 80k and immediately noticed a jump in MPG by around 2-3 miles per gallon highway. I also felt like the truck had more power, however may or may not have been the case. But I couldn't argue with the instant increase in mpg while driving the same paths, in the same manner. Sadly I did not check the gap on the existing plugs, but all of the new ones I set at .030 - .032.
I will need to set aside time to do the front/rear diff. I got the truck with 75k, but now am at 105k and do not know if they were done before I got it. It could be the factory fluid still grinding away in there.....
I changed out my plugs around 80k and immediately noticed a jump in MPG by around 2-3 miles per gallon highway. I also felt like the truck had more power, however may or may not have been the case. But I couldn't argue with the instant increase in mpg while driving the same paths, in the same manner. Sadly I did not check the gap on the existing plugs, but all of the new ones I set at .030 - .032.
I will need to set aside time to do the front/rear diff. I got the truck with 75k, but now am at 105k and do not know if they were done before I got it. It could be the factory fluid still grinding away in there.....
The following 2 users liked this post by EcoBoostJake:
Geronimo John (03-02-2019),
HRDROKN (01-11-2020)
#12
I am having pretty bad mpg myself (2014 screw 3.7 V6) ever since I got the truck.I'm averaging 15 hwy and 9 city. I haven't hand calculated but from reading posts the avg. mpg is "close" to accurate. I haven't done any maintenence since I purchased it 4k miles ago. I'm now at 31k, going to change engine oil, plugs and air filter and hope for the best.
The following users liked this post:
HRDROKN (01-11-2020)
#13
Senior Member
Thread Starter
I think the truck appears to feel smoother but hard to say.
How do they clarify "severe duty" it would be interesting to read up on that. I do a fair amount of towing and long distant towing. It's not a super heavy trailer but around 6500lbs. I've put 3000 miles on that trailer in less than a year.
Last edited by LEBScrew13; 09-03-2015 at 10:16 PM.
#14
I am having pretty bad mpg myself (2014 screw 3.7 V6) ever since I got the truck.I'm averaging 15 hwy and 9 city. I haven't hand calculated but from reading posts the avg. mpg is "close" to accurate. I haven't done any maintenence since I purchased it 4k miles ago. I'm now at 31k, going to change engine oil, plugs and air filter and hope for the best.
#15
Senior Member
I do know that right after I wash my truck it is soooo much faster. The drag coefficient drops like a rock from all the dust specs gone from my paint!! Oh but wait...add a coat of wax, it fills in all the pin scratches in the clear coat and then the truck screams as the drag coefficient seems non-existent!!! Any more and I'd be able to tip the scale and convert the truck to a pure energy state and achieve warp status.
The following 5 users liked this post by RogueGT:
Energized (12-10-2018),
rob_v (08-08-2018),
tanked_darren (09-05-2015),
waterboyjlw (09-04-2015),
ymeski56 (10-10-2021)
#16
I do know that right after I wash my truck it is soooo much faster. The drag coefficient drops like a rock from all the dust specs gone from my paint!! Oh but wait...add a coat of wax, it fills in all the pin scratches in the clear coat and then the truck screams as the drag coefficient seems non-existent!!! Any more and I'd be able to tip the scale and convert the truck to a pure energy state and achieve warp status.
#17
Zero commute, I got a company car. I put a 4 inch rc lift and 295/70 18 so my mpg is about the same as my V10 excursion now. The mpg I was getting was prior to the lift and wheels.
#18
Alaskan by Choice
I do know that right after I wash my truck it is soooo much faster. The drag coefficient drops like a rock from all the dust specs gone from my paint!! Oh but wait...add a coat of wax, it fills in all the pin scratches in the clear coat and then the truck screams as the drag coefficient seems non-existent!!! Any more and I'd be able to tip the scale and convert the truck to a pure energy state and achieve warp status.
I expected more from a Nuke....no Langmuir's Theory of lubrication or thin film flow discussion???? Thanks for the chuckle.
#19
Senior Member
Well the biggest diff was the plugs. It's an ecoboost and your plug gap was like 1/3 off lol
#20
Junior Member
New Owner of a 2011 Lariat
Now you have me worried too.
My (recently purchased) 2011 3.5L ECB Lariat 4X4 has 75K miles and I don't have any previous records. I'm told it has fresh oil, but now I'm wondering if the front or rear diff needs changing. I'm also having a tough time getting over 13 MPG. Do I need to pull the plugs? I intend to get a lot of mileage out of this truck and I want to do the right thing.
My (recently purchased) 2011 3.5L ECB Lariat 4X4 has 75K miles and I don't have any previous records. I'm told it has fresh oil, but now I'm wondering if the front or rear diff needs changing. I'm also having a tough time getting over 13 MPG. Do I need to pull the plugs? I intend to get a lot of mileage out of this truck and I want to do the right thing.