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Open Roads Forum  >  Towing

 > 2018 Navigator 6mpg when towing 8k lb camper Ecoboost

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carringb

Corvallis, OR

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Posted: 05/20/19 08:35pm Link  |  Quote  |  Print  |  Notify Moderator

FMF_Doc_B wrote:

The V8 Yukon was 10 mpg at same speed.!


Not possible. Maybe downhill with a strong tailwind. Unless you had the secret GM V8 that uses wormholes to shrink frontal area....


Bryan

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Bionic Man

Colorado

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Posted: 05/20/19 09:18pm Link  |  Quote  |  Print  |  Notify Moderator

My 2011 Yukon with the 6.2 doesn’t get that good of MPG when I’m towing my relatively aerodynamic boat. I’m surprised yours would have done that well with a TT.

As others have said, that speed will kill MPG. If you want it to improve, slow down.

As to those concerned about his tires, there are now a number of ST that are speed rated above that 65 MPH.


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1320Fastback

Vista, Ca

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Posted: 05/20/19 09:21pm Link  |  Quote  |  Print  |  Notify Moderator

75mph is 23% less efficient than 55mph. THERE IS NOTHING YOU CAN DO ABOUT THAT.


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1320Fastback

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Posted: 05/20/19 09:22pm Link  |  Quote  |  Print  |  Notify Moderator

That motor is Eco or Boost. One or the other and at 75mph towing a parachute you are in Boost dumping fuel into the motor.

* This post was edited 05/20/19 09:32pm by 1320Fastback *

twodownzero

NM

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Posted: 05/20/19 11:33pm Link  |  Quote  |  Print  |  Notify Moderator

You're working a tiny truck to death. Of course it's going to burn fuel.

midnightsadie

ohio

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Posted: 05/21/19 05:29am Link  |  Quote  |  Print  |  Notify Moderator

poor little engine just wasn,t made to do that job ,get a real engine ,p.s.nobody should be towing at 75mph.

fitznj

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Posted: 05/21/19 05:36am Link  |  Quote  |  Print  |  Notify Moderator

I tow with a Transit EcoBoost - my last trip (on level ground) got
14.4 mpg according to the trip meter. My previous trip in hills got
13.2 mpg. I tow between around 60 mph. The lowest I've seen is 11.8
mpg.

Try slowing down - you're towing a barn door behind your Navigator.

I just looked up a calculator - I'd be loosing 3.8 mpg if I towed at
75 mph versus 60mph.


Gerry

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Posted: 05/21/19 05:44am Link  |  Quote  |  Print  |  Notify Moderator

Have you ever had a trailer get squirrely at 75 mph? It’s not fun. 60 or less and your mph and safety will improve

dodge guy

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Posted: 05/21/19 05:47am Link  |  Quote  |  Print  |  Notify Moderator

Jjsimon111 wrote:

Slow down also are you're tires on you're trailer ST's. They are rated at 65mph. Hate to see a blowout at 75 mph.


Some newer ST’s are rated at 87 mph.


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dodge guy

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Posted: 05/21/19 05:48am Link  |  Quote  |  Print  |  Notify Moderator

carringb wrote:

FMF_Doc_B wrote:

The V8 Yukon was 10 mpg at same speed.!


Not possible. Maybe downhill with a strong tailwind. Unless you had the secret GM V8 that uses wormholes to shrink frontal area....


That’s what I was thinking! Sounds incredibly high for that size and weight!

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