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 Post subject: MPG article with CRD
PostPosted: Thu Jun 28, 2018 10:13 am 
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I saw this article today about improving MPG. It is an old article and used an 05 CRD as the tester. Has anyone tried any of these products and found they worked well?

http://www.fourwheeler.com/how-to/engin ... l-economy/

:juggle:


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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 1:15 pm 
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They missed the fuel line magnetometer that magnetizes the fuel flowing through it for better power and economy. Pure snake oil.

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 1:43 pm 
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mrhemi wrote:
They missed the fuel line magnetometer that magnetizes the fuel flowing through it for better power and economy. Pure snake oil.

And injecting methanol mixed with H2O into the intake, Propane injection, and CAC (intercooler) misting systems, etc...
And there are a few more. :roll:

I know the Propane injection works for power, not sure it helps any economy wise. I have driven a Dodge Cummins truck with the Propane injection system installed and the power gains were quite impressive. :shock:

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 2:32 pm 
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Rule of thumb - if it sounds too good to be true then it's not true. The magic fuel additives, turbo flow aligner, fuel ionizer, etc. type stuff is designed to lighten your wallet not increase mpg. Biofuel maker won't improve mpg even it they claim the improvement is limitless - there is ZERO or less improvement in the mpg but there is improvement in the cost of mpg as brewing you own is cheap if you don't value your labor and can get the ingredients cheap. Switching to electric fan will at best provide minuscule gain. Changing front hubs to manual locking probably isn't worth the cost an hassle on any modern 4-wheel drive assuming you can even do it on a CRD.

Back when I was much younger and much dumber I tried a number of the magic mpg improver things and none/zip/zero/nada of them worked.

Best bet - keep tires inflated properly; make sure brakes don't drag; avoid excessively heavy tires unless you just have to have them for off road; new air filter regularly; change oil (use proper oil) and filter regularly (I don't personally like to go past 6,000 miles); make sure thermostat is functioning properly (engine temp needle near dead verticle); change timing belt at 6 yrs or 100K miles whichever is first. Routine stuff. If you want to invest $s in something that's proven to work get a GDE ECU tune especially the EcoTune for roughly 20% better mpg. GDE TCM tune is not a big help if you do a lot of driving at over 55 mph but under that helps a bit.

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 2:52 pm 
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Ways to improve or maintain the relatively good MPG of the CRD.

Keep the stock tire size and don’t use aggressive off road tires.
Don’t lift the suspension.
Don’t install a roof rack.

Basically, don’t do any Jeep stuff with your Jeep (and don’t have any fun with it).

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 3:57 pm 
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flash7210 wrote:
Ways to improve or maintain the relatively good MPG of the CRD.

Keep the stock tire size and don’t use aggressive off road tires.
Don’t lift the suspension.
Don’t install a roof rack.

Basically, don’t do any Jeep stuff with your Jeep (and don’t have any fun with it).

Might as well sale it and buy a Prius. :ROTFL: :lol:

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 4:08 pm 
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Yeh right up until you try to tow anything with a Prius or drive that Prius on a sand or gravel road. I've driven a Prius multiple times - decent city/hwy vehicle; not much luggage room; mpg adequate but not impressive when you compare 55 in a Prius vs 35 in a CRD on the hwy.

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 4:35 pm 
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I presume best way to keep consumption low is to maintain it regularly and have a light right foot. What I don't have but at least I regularly clean the injectors and burn the soot out of cylinders and shouldn't that improve mileage..? :roll:

Here the speed limit on highways is 140km/h (87mph), speed controls mostly in lower limit areas and I quite regularly make trips to capitol and back, 100km/direction. With cruise at 140-160.

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 Post subject: Re: MPG article with CRD
PostPosted: Thu Jun 28, 2018 4:45 pm 
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papaindigo wrote:
Yeh right up until you try to tow anything with a Prius or drive that Prius on a sand or gravel road. I've driven a Prius multiple times - decent city/hwy vehicle; not much luggage room; mpg adequate but not impressive when you compare 55 in a Prius vs 35 in a CRD on the hwy.


LOL

https://jalopnik.com/this-lifted-prius-trolls-jeeps-1825777000

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 Post subject: Re: MPG article with CRD
PostPosted: Fri Jun 29, 2018 11:23 am 
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Speaking of tire pressure. I have stock rims with 31.5 inch tires. What pressure am I supposed to run those at? :?
Trucks with big wheels will run pressures near double what small wheels will.
This is my first 4x4 and first set of oversized wheels.


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 Post subject: Re: MPG article with CRD
PostPosted: Fri Jun 29, 2018 2:52 pm 
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Science and Energy wrote:
Speaking of tire pressure. I have stock rims with 31.5 inch tires. What pressure am I supposed to run those at? :?
Trucks with big wheels will run pressures near double what small wheels will.
This is my first 4x4 and first set of oversized wheels.

I run 35 in my 245/75/16's

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 Post subject: Re: MPG article with CRD
PostPosted: Fri Jun 29, 2018 6:12 pm 
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Science and Energy wrote:
Speaking of tire pressure. I have stock rims with 31.5 inch tires. What pressure am I supposed to run those at? :?
Trucks with big wheels will run pressures near double what small wheels will.
This is my first 4x4 and first set of oversized wheels.

Max tire pressure is molded into the sidewall along with all the other tire data.
Recommended tire pressure for stock size tires is in the data sticker on the drivers door.

For the street, don’t exceed the max pressure posted on the tire.

For off road, some guys air down to 10-15 psi for better traction in mud, sand, rocks, etc.

It will be up to you to decide which is best for your driving conditions.

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 Post subject: Re: MPG article with CRD
PostPosted: Sat Jun 30, 2018 4:02 am 
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For lower fuel consumption, what about this:

Image

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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 2:34 pm 
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Maybe, but I would prefer the more modern schooner style of sail rigging. It is just simpler to operate and maintain.

How accurate is the EVIC calculated MPG?


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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 3:01 pm 
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Science and Energy wrote:
Maybe, but I would prefer the more modern schooner style of sail rigging. It is just simpler to operate and maintain.

How accurate is the EVIC calculated MPG?


Pathetically inaccurate, at best. Most people use a GPS based vehicle speed sensor to adjust for actual miles traveled per tank, to get real world mileage.

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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 3:07 pm 
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darn, I am getting very good EVIC numbers. I will have to do some manual calcs soon.


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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 8:02 pm 
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My EVIC has always been a bit optimistic, but as long as the input constants aren't changed, (tire size, VSS, etc) variable changes shown, are relatively close to actual, so improvements are shown as improvements, and things thought to be improvements but aren't, will show true to what they are.

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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 9:57 pm 
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As a few others have stated on LOST; we don't drive it strictly for the fuel mileage! :roll:

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited :JEEPIN:
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount

98 Dodge Cummins 24 Valve


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 Post subject: Re: MPG article with CRD
PostPosted: Mon Jul 02, 2018 11:17 pm 
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Science and Energy wrote:
Speaking of tire pressure. I have stock rims with 31.5 inch tires. What pressure am I supposed to run those at? :?
Trucks with big wheels will run pressures near double what small wheels will.
This is my first 4x4 and first set of oversized wheels.


I run 40 psi in my 265/75r16 duratracs or they feel soggy.

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 Post subject: Re: MPG article with CRD
PostPosted: Tue Jul 03, 2018 10:43 am 
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WWDiesel wrote:
As a few others have stated on LOST; we don't drive it strictly for the fuel mileage! :roll:


And if our mileage is worse than those of our buddies, we do the same trick as they do. Shape the truth a bit... :roll:

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