Motor Home Mileage

[87MH]

1367_345:

I feel your pain, but I'm glad to know some actual numbers!

I've had so many people bragging about 10's and 12's I was beginning to think I had a seriously sick 454.

Anyone else have some documented numbers?

[1985air345]

My numbers ran 6.5 - 8 mpg while I tracked it. It varied based on speed and gen set usage. Most of my driving was in Florida and Georgia. Mine is all stock.

[thenewkid64]

I am averaging 7-9 MPG with a 2300 LB toad in Fla. If I run the genset it is more like 7. It really seems to be based on the speed more than load. This one rides so smooth I have to watch that I don't go too fast. I normally drive at 62-68 MPH.

Stock exaust, but a nascar-ed fresh air intake and a new Edelbrock Qjet carb. I am still tweaking the carb, the OEM carb got me closer to 10 MPG, but that was without the toad.

[donnall]

Headers make a big difference in milage and performance. I don't have such exact mumbers but I believe I'm getting about 20% better milage and alot more power.

Don

[thenewkid64]

my 76 Argosy had headers and I had more power for sure, the mileage with the same model Qjet was closer to 10, I know on our longest trip to Virgina I got close to 11 with no genset or dash AC required!

I also think that the timing on my 78 is off a bit, I just can't get it to perform like I "feel" it should and I know that will affect the overall mileage.

[toddster]

I'd be curious what sort of fuel economy some of the Isuzu and Cummins (conversions) diesels are seeing.

Happy Trails!!!!

[ALANSD]

My only mods are the tornado ar manager over the carb. The carb is stock but kept clean as i can keep it... I run mid-grade gas mostly, I put in Marvel Mystery Oil once in a few tanks...(a favorite of my dad who was a car man for years)

My exhaust is stock, except neweroem type mufflers added by Merlin Muffler. Dual exhaust with manifolds.
Tuned and new spark plug wires. I like Brett get 7-9 towing my Saturn running the generator for summer a/c.

I would like to get MSD ignition parts, and maybe a freer flow exhaust down the road...like Hedman or something.
Meanwhile I'm happy...the rig runs well and has been quite dependable.

[PeterH-79MH]

Originally posted by 87MH
.....I know that PeterH is out there waiting to jump in with an advertisement for Jacobs Ignitions, but I think that I will go the MSD route with an adjustable timing kit...

Did I ever mention the jacobs ignition system????
On our big trip last summer, I averaged 8 mpg. I noticed a considerable increase in fuel consumption with speeds over 65mph.

[wb13798]

i get about 8 when im not getting my foot in the tank and when i do mpg dropps to six . which is not bad, i pull a trail blazer LTZ that weighs more than i had planned to pull. but it pulls it with no problems. i dont think 7mpg is a bad figure for a gas mh pulling a toad or anything. the new fuel injected engines seem to get a bit better, if you stay under 65mph .

[joepospisil]

We just returned from a 4100 mile round trip to arizona and back with a cummins powered 82 310. 13.5 mpg overall and used no oil. Joe

[joepospisil]

The trip was done from Minnesota and averaged 62-65 mph Joe

[ALANSD]

yes that diesel does have its advantages.
I guess we gassers make up a bit in lower maintenace costs. Then again your diesel will probably do more overall miles. Oh well, either way you gotta be happy to have what you have

[zduke4x]

I like it cold inside in warm weather, so I run all the air I can and when parked obviously get no mileage per gallon....the dog needs air, too.

I have run test hiway mileage and with no accessories running I seem to get close to double figures but under my normal running of the back roads and genset all together 7 seems to be the norm...jem

[87MH]

I only plan one more trip prior to the Texas heat making weekend trips unbearable.

I hope to add some ignition upgrades along with the new dash -