Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 


Reply
 
Thread Tools Display Modes
 
Old 05-17-2024, 03:50 PM   #1
Senior Member
 
Join Date: Sep 2013
Location: Georgia
Posts: 806
V10 - Gas Mileage Improvement ??

So wondering if a "high pressure fuel system cleaner" might improve my gas mileage more than just a bit - noting that my van is 2002 V10 - with just 28,000 miles on it - gets about 9.2 - 9.8 per gallon on regular gas - and weighs in at approx 10,800 when loaded. I generally add a Seafoam to each tank full (46 gal tank) when traveling.

Would appreciate all of you V10'ers and engine engineers chiming in when you have the time. Money quoted for work is $ 160 bucks so money not a concern -

Are there any hi pressure issues/concerns regarding valves or injectors that would say "don't do it" - even based on my historically low mileage for a 2002 ?

Thanks for chiming in --

doublevan2 is offline   Reply With Quote
Old 05-17-2024, 07:16 PM   #2
Senior Member
 
Join Date: Jun 2018
Posts: 232
I don't have a v10 but I have plenty of experience with towing with gas/diesel. The big problem you'll have is many of these so called improvements will have a payout in years - if you actually get one.

One thing actually did improve my towing on a 5.9L Dodge engine (gas) - free flow air filter. I didn't do a full free flow exhaust which would have improved the result.

Honest - hand calculated improvement while towing - 8.5 mpg to 10.5 mpg over thousands of miles. That's about a 25% improvement.

Chip - waste of time - gaso engines are not as configurable as diesel.

Gears - sure - many will suggest improving gear ratios but won't give you a "refund" when you find it makes an immaterial difference.

Keeping the engine RPM in the best part of its torque/HP range by keeping out of OD in traffic and keeping at/under 65 make a real impact. If I recall - Georgia is almost like TX where 80 is for the old codgers so I understand it can be hard.

Best part of all of it - I haven't told you anything that will cost more than $20-$30

School me - please (setting myself up but let's hear it).
SMB123 is offline   Reply With Quote
Old 05-17-2024, 10:00 PM   #3
Senior Member
 
Twoxentrix's Avatar
 
Join Date: Mar 2015
Location: Maryland
Posts: 3,439
Garage
Quote:
Originally Posted by SMB123 View Post
Keeping the engine RPM in the best part of its torque/HP range by keeping out of OD in traffic and keeping at/under 65 make a real impact. If I recall - Georgia is almost like TX where 80 is for the old codgers so I understand it can be hard.

Best part of all of it - I haven't told you anything that will cost more than $20-$30

School me - please (setting myself up but let's hear it).
In my experience, you've hit the nail squarely on the head.

If you were racking up a lot of miles traveling Russ then some 'changes' may help in the long run (opposed to just a couple nice trips throughout the year). I wouldn't do anything other than what SMB123 suggested - 'The juice just isn't worth the squeeze'
I will add though, an effective fuel additive periodically helps since it addresses deposit build up with injectors & plugs.
I throw a bottle of Red Line 60103 SI-or the Techron complete fuel system cleaner in the tank of both our cars (gas) about once every 2 months, and run 4oz of Turbo Maxx in the oil on every change.

https://www.amazon.com/Red-Line-Comp...8EALw_wcB&th=1

https://www.amazon.com/Chevron-Techr...00092893E&th=1

https://www.zddpmaxx.com/shop-zddpmaxx/turbo-maxx-2
__________________
TwoXentrix
"AWOL"
Twoxentrix is offline   Reply With Quote
Old 05-18-2024, 12:37 PM   #4
Senior Member
 
1der's Avatar
 
Join Date: Apr 2013
Location: San Francisco, CA
Posts: 3,337
The best mileage I have had in a V10 was just over 14.9 mpg. That was an E350 XLT 15 pass QuadVan TTB 4x4 w 3.73 gearing on 265/75-16. Stock clean (no rack/awning) roof, stock bumpers and lightly loaded with only a couple of hundred pounds inside. Did this a few times. ~ 65 mph speeds.

Also did the same MPG w a CCV High Top installed as the only difference. Highway 80 San Francisco to Loveland, same mpg in both directions.

Our 7.3 can do a bit better than that IF I keep it at under 65mph and minimize the loading. But normally it is around 13.7mpg for most camping trips.

The 10,800 weight would be the first area to address. Not easy, but that is where the fuel consumption penalty is the greatest.
__________________
Ray
Beastie 3: 2002 7.3 EB Cargo: Agile TTB, CCV High Top, Custom Walk Through, Lots of stuff added. www.BlingMyRig.com
1der is offline   Reply With Quote
Old 05-18-2024, 01:46 PM   #5
Senior Member
 
Join Date: Sep 2013
Location: Georgia
Posts: 806
Thanks forum members for your input ! I'll get some new blades for my sawzall and get to it !
doublevan2 is offline   Reply With Quote
Old 05-19-2024, 06:15 AM   #6
Senior Member
 
Join Date: Oct 2007
Location: Indy
Posts: 579
I got 19 once on a 50 mile stretch in Texas with a 30 mile per hour tail wind. Aside from that though, driving slow makes a big difference. My van weighs about 8,200 loaded. I can get 14 at 65 mph or 11 at 72 mph or less than 10 at 80 mph plus. Ours is a pop top, but no roof racks or fancy bumpers, etc.
Attached Thumbnails
image2.jpeg  
__________________
2008 Ford E-350 Quigley 4x4 V10 - 164,000 miles
RB50, PH Top, Dual AGM Group 27 Deka, 2000 Tripplite Inv., No Propane or Water Systems
Van Weight 8,100 pounds, added one rear leaf spring, BFG AT KO LT265/70R17 E Tire press 50psi.
Steve_382 is offline   Reply With Quote
Old 05-19-2024, 06:20 AM   #7
Senior Member
 
86Scotty's Avatar
 
Join Date: Jul 2011
Location: TN
Posts: 10,318
The V10 isn't going to improve much. It is what it is. My 26' V10 class B motorhome got 11 no matter how I drove it. Even when I towed a car behind it it got about 10.

Both V10 vans I've had get about the same, 11-12 not thinking too much about how I drive them.

At least get a 5 star tune. It won't help mileage but it makes bad mileage more enjoyable.

86Scotty is offline   Reply With Quote
Old 05-19-2024, 09:53 PM   #8
Senior Member
 
mikracer's Avatar
 
Join Date: Sep 2013
Location: San Luis Obispo, CA
Posts: 2,555
My V10s best mpg was 13mpg, that was 2wd, stock everything. Once I went 4x4, it dropped to 12mpg and once I added and rack, it dropped to 11mpg. These are best mpgs, not average.

On average, I get about 10mpg on the freeway. Keep in mind, this is a passenger van not a sportsmobile. I tried keeping it at 65mph but the miniscule gain wasn't worth it to me so I drive "normal" at around 70-75mph.
__________________
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...
mikracer is offline   Reply With Quote
Old 05-20-2024, 06:47 AM   #9
Senior Member
 
IanF's Avatar
 
Join Date: Mar 2019
Location: Croydon, PA
Posts: 309
Fuel mileage with vans is heavily speed dependent. The faster you're trying to push a brick through the air, the more horsepower you need and therefore the amount of fuel you're going to burn.

I learned this lesson 25 years ago driving a totally stock 1990 E-150 5.0 EFI conversion van. It was a vehicle designed for the 55 MPH era and that speed was really where it was happiest. Much above 60 MPH and I could practically watch the gas gauge needle move.

Sit in the right lane, set the cruise control to 65 MPH and enjoy the scenery... and just plan on getting to your destination a few minutes later - or possibly earlier since you might not need to stop for fuel as often.
__________________
1992 E350 7.3 IDI - "The White Whale" RV conversion planned.
IanF is offline   Reply With Quote
Old 05-20-2024, 09:47 AM   #10
Senior Member
 
dirtanddogfur's Avatar
 
Join Date: Jul 2014
Location: SLC, Utah
Posts: 170
I was just going to post with a similar question.


I have a 2012 V10 with 76K miles. Initially, I was getting about 10-12mpg. These days I rarely see above 10mpg. No significant weight changes.



I have noticed in the past it is particularly sensitive to the air filter condition.



When you say 'high flow' did you just change the actual filter or modify the actual air intake?
__________________
2012 E350 SMB/Quad Van
2021 Chevy Colorado ZR2 Bison
dirtanddogfur is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Sportsmobile Registry

Hercules

firedude67

Dusty

capnkurt
Add your Sportsmobile
» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 02:16 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.