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Old 07-19-2015, 01:07 PM   #1 (permalink)
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12 ways to get better gas milage

12 Ways to Get Better Gas Mileage

1 fill up less often.
2 measure your fuel mileage
3 dont drive aggressively
4 remove excess weight
5 avoid traffic
6 tire pressure
7 tire alignment
8 the A/C vs. window down debate
9 shift at lower engine speed (manual transmissions)
10 drive slow
11 dont try to accelerate up a hill
12 coast
13 use RUG
14 buy a honda

We have multiple topics on everyone of these.
It come no where near rivaling our master wiki list.

The only 2 that catch my attention for thinking out side the box that the news outlets think from inside are tire alignment and just making mention of coasting.
If you have a VW or Audi with a turbo gas motor absolutly do not use RUG unless you really like visiting your dealership and giving them money.

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Old 07-20-2015, 11:15 AM   #2 (permalink)
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Old 07-20-2015, 04:40 PM   #3 (permalink)
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regular unleaded gas?
Not everybody would agree, especially on a high compression engine higher octane can yield better economy as they tend to ping on regular, forcing the ECU to alter the timing.
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Old 07-20-2015, 05:55 PM   #4 (permalink)
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11. seems wrong. Accelerating up a hill can use the engine more efficiently if one is able to use the energy to coast in a section where the engine is less efficient.
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Old 07-20-2015, 06:08 PM   #5 (permalink)
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And why would filling up less often get you better mpg? (Assuming of course that you don't drive out of your way to get gas.) Even filling the tank of my Insight, rather than my usual $20 bill in the cash pump, means I'm hauling around an extra 20-30 lbs.
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Old 07-20-2015, 06:20 PM   #6 (permalink)
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Quote:
Originally Posted by RedDevil View Post
regular unleaded gas?
Not everybody would agree, especially on a high compression engine higher octane can yield better economy as they tend to ping on regular, forcing the ECU to alter the timing.
exactly!
When I had the Infiniti Q45, I tested running regular and high on my trips to texas. The ecu would alter the timing and reduce the mpg.
On newer cars (the Q45 was an 02) run what is recommended. THe ECU KNOWS!
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Old 07-20-2015, 09:31 PM   #7 (permalink)
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Quote:
Originally Posted by jamesqf View Post
And why would filling up less often get you better mpg? (Assuming of course that you don't drive out of your way to get gas.) Even filling the tank of my Insight, rather than my usual $20 bill in the cash pump, means I'm hauling around an extra 20-30 lbs.
The theory is (on paper) that filling up less often means you carry less weight. More than likely you can calculate this difference on paper and its so small wont actually see it.
Then you get into the whole "in tank fuel pump immersion debate" where immersing the fuel pump in fuel (not letting the tank drop much below 3/4) cools the fuel pumps motor allowing it to last a lot longer.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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Old 07-20-2015, 09:33 PM   #8 (permalink)
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
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Quote:
Originally Posted by mcrews View Post


exactly!
When I had the Infiniti Q45, I tested running regular and high on my trips to texas. The ecu would alter the timing and reduce the mpg.
On newer cars (the Q45 was an 02) run what is recommended. THe ECU KNOWS!
The VW 1.8L turbo gas mark 4 engine saw at least 2mpg less on RUG then mid grade.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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Old 07-21-2015, 01:07 PM   #9 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
The theory is (on paper) that filling up less often means you carry less weight.
Oh, different cultures. To me, "fill up" means when the fuel gauge gets close to empty, you put some gas in. Not necessarily (or even that often) to fill the tank completely full. So for me, putting in $20 worth gets me to half or 3/4 full. Though there was one time during the recent price dip when I actually got about a quarter back in change :-)


Quote:
....cools the fuel pumps motor allowing it to last a lot longer.
Fuel pumps wear out? Well, I suppose if you've got a gas guzzler, the poor thing must struggle to move all that gas :-)
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Old 07-21-2015, 06:31 PM   #10 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
The theory is (on paper) that filling up less often means you carry less weight. More than likely you can calculate this difference on paper and its so small wont actually see it.
Then you get into the whole "in tank fuel pump immersion debate" where immersing the fuel pump in fuel (not letting the tank drop much below 3/4) cools the fuel pumps motor allowing it to last a lot longer.
Right, which is hilarious considering I have driven my EFI Toyota 4x4 truck for 20 years (200k miles) never filling until empty, and it still has the original fuel pump.

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