Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-09-2008, 10:25 PM   #1 (permalink)
Silverfox
 
mikeb535's Avatar
 
Join Date: Jun 2008
Location: PA
Posts: 8

Focused - '07 Ford Focus SES
90 day: 29.03 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Mods for speeds 35-45mph?

What modifications can be made to increase FE on vehicles with auto trans? That is besides the usual stuff. I.E. Increase tire pressure, lower driving speed etc: Most of my trips are 20-25 mile in length with speeds between 30 and 45mph. The best I can get is 27-29mpg. Would like to get 30+.

Mike

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-10-2008, 01:10 AM   #2 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,873

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,388
Thanked 2,883 Times in 1,812 Posts
Hello Mike,

Are you coasting down hills in neutral? Do you have stop lights where you can turn off the engine? Are you avoiding A/C and daytime lights? You could see some benefit from some aero mods. You might want to get a ScanGauge and use it to maximize your mileage while accelerating.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 08-10-2008, 03:09 AM   #3 (permalink)
EcoModding Apprentice
 
Join Date: May 2008
Location: South Dakota
Posts: 117

GMC Sonoma - '94 GMC Sonoma
90 day: 36.97 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
Try 0w-30 synthetic motor oil and synthetic tranny oil. It made a difference for me.
  Reply With Quote
Old 08-10-2008, 05:14 AM   #4 (permalink)
Mr. Blue Tape
 
azraelswrd's Avatar
 
Join Date: Jun 2008
Location: Fresno, CA
Posts: 345

AzxA - '06 Scion xA
90 day: 42.72 mpg (US)
Thanks: 0
Thanked 2 Times in 2 Posts
Here's how I would order the mod priorities:

1) your driving style/habits
Read the 100+ tips (again)
Get a scangauge (or some other way to get instant feedback on MPG)
reduce idle time
reduce accesory usage (ie A/C)
get to your most efficient speed ASAP

2) engine maintenance
oil/oil filters
spark plugs
fuel type


3) tires
low rolling resistance type
proper air pressure
proper alignment

4) weight reduction
if you don't need it, dump it

5) aero
"smooth" out the car's profile by covering/removing anything that creates bad drag
-grill block
-smooth hubcaps
-belly pan
-front air dam
-rear wheel skirts
-side/front/rear wheel fairings
-wiper wind deflector
-remove passenger side mirror
-remove racks
__________________


My 5 pillars of fuel efficiency:
  • driving style
  • aerodynamics
  • tires
  • weight reduction
  • engine maintenance
  Reply With Quote
Old 08-10-2008, 11:37 AM   #5 (permalink)
Silverfox
 
mikeb535's Avatar
 
Join Date: Jun 2008
Location: PA
Posts: 8

Focused - '07 Ford Focus SES
90 day: 29.03 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
I have done most of the tried and true methods of hypermiling because of the auto trans I do not shut engine down at long lights but do put trans in neutral. I have blocked the front grille on the outside but this would only help at expressway speeds. I use 5-20w full syn eng oil and do not have a lead foot. I have ordered a KIWI and am hoping that it will help me achieve better FE.

Mike
  Reply With Quote
Old 08-10-2008, 02:50 PM   #6 (permalink)
Mr. Blue Tape
 
azraelswrd's Avatar
 
Join Date: Jun 2008
Location: Fresno, CA
Posts: 345

AzxA - '06 Scion xA
90 day: 42.72 mpg (US)
Thanks: 0
Thanked 2 Times in 2 Posts
You can shut down the engine at long idles. I use the 10 second rule. It's with forced auto stops and pulse-n-glides that we shouldn't do in AT. Sometimes a lead foot early can be better than a limp foot because you want to get to your highest gear sooner than later.
__________________


My 5 pillars of fuel efficiency:
  • driving style
  • aerodynamics
  • tires
  • weight reduction
  • engine maintenance
  Reply With Quote
Old 08-10-2008, 04:34 PM   #7 (permalink)
Efficiency freak
 
Bearleener's Avatar
 
Join Date: Mar 2008
Location: Berlin, Germany
Posts: 58

Frugolf - '96 VW Golf wagon
90 day: 40.36 mpg (US)
Thanks: 0
Thanked 14 Times in 6 Posts
Definitely driving style tweaks will help the most.

Don't underestimate the effect of aerodynamics at low speeds. When I put on my above-bumper grill block I immediately noticed subjectively longer glide times at in-town speeds (60 km/h = 36 mph), whereas at highway speeds the drag effect was actually less noticeable (except that the car feels a lot more stable, less nervous). Even at very low speeds (25 km/h = 15 mph) something's happening because raindrops dripping off the front lip of the hood get blown back toward the windshield, that didn't happen before the grill block. A rule of thumb says that above 60-80 km/h (36 - 48 mph), depending on the car, aerodynamic drag becomes larger than other drag, but that means that below that it's still up to 50% of total drag.

And raising the tire pressure helps, too.
__________________

You ever notice that birds pulse & glide, too?
  Reply With Quote
Old 08-10-2008, 08:26 PM   #8 (permalink)
EcoModding Lurker
 
Join Date: Aug 2008
Location: albuquerque, nm
Posts: 6

Poopsie - '91 Nissan Sentra GXE
90 day: 47.06 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Bearleener View Post
Definitely driving style tweaks will help the most.

Don't underestimate the effect of aerodynamics at low speeds. When I put on my above-bumper grill block I immediately noticed subjectively longer glide times at in-town speeds (60 km/h = 36 mph), whereas at highway speeds the drag effect was actually less noticeable (except that the car feels a lot more stable, less nervous). Even at very low speeds (25 km/h = 15 mph) something's happening because raindrops dripping off the front lip of the hood get blown back toward the windshield, that didn't happen before the grill block. A rule of thumb says that above 60-80 km/h (36 - 48 mph), depending on the car, aerodynamic drag becomes larger than other drag, but that means that below that it's still up to 50% of total drag.

And raising the tire pressure helps, too.
Wow, Im sold on areodynamic mods now.
Most of my daily commute (40 miles daily total)
is 40 to 50 mph. I need to get started on the front air dam,
and complete underbody pannel.
__________________
[url=http://ecomodder.com/forum/em-fuel-log.php?vehicleid=1490][img]http://ecomodder.com/forum/fe-graphs/sig1490a.png
  Reply With Quote
Old 08-11-2008, 12:13 AM   #9 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,873

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,388
Thanked 2,883 Times in 1,812 Posts
Hi,

Can you post a picture of the front of your car? I'll bet that a grill block and/or blocking some other "features" would help.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 08-11-2008, 07:04 AM   #10 (permalink)
Boxhead
 
whokilledthejams's Avatar
 
Join Date: May 2008
Location: Fredonia, NY
Posts: 322

Boxy Brown - '04 Scion xB
90 day: 35.48 mpg (US)
Thanks: 0
Thanked 1 Time in 1 Post
Send a message via AIM to whokilledthejams
Quote:
Originally Posted by monkey View Post
Wow, Im sold on areodynamic mods now.
Most of my daily commute (40 miles daily total)
is 40 to 50 mph. I need to get started on the front air dam,
and complete underbody pannel.
My mild aero mods definitely helped at 40-50mph, where almost all of my commute is. In particular, this is a good situation where cheap mods will really pay off, too, since the benefits might not be huge, but they're still there to be had.

__________________
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Longtime Lurker Looking for Miles ZX40 Electric Micro van mods & information rmay635703 Fossil Fuel Free 49 07-06-2014 11:27 PM
GM mods the Sierra hybrid pickup: aerodynamic tweaks + LRR MetroMPG EcoModding Central 5 09-03-2012 09:17 AM
Large Pickup Aerodynamic Mods buckyball Aerodynamics 43 08-02-2008 06:49 PM
2006 in review: mods vs. technique. And the winner is... MetroMPG Hypermiling / EcoDriver's Ed 16 12-10-2007 08:46 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com