It's surely not cheap. Was curious if anyone had any real
world mileage increase numbers before I give them a call.
I plan on keeping my '01 2500 QC 4x4 for many many
years to come and might consider this if the increase is
Ok, just got off the phone with DynaTrac and per the
feedback they receive, the increase in MPG is 2-4
depending of course on the driver. That being said,
if you see an average of 3 mpg increase, with a 34 gal
tank you will get an additional 102 miles. And if you
are paying $2.95 for premium (as I am) then you will
save about $29.00 per fill up. At $1900 per kit it will
take about 66 full tanks to pay for itself. For me, thats
about 1.5 years. If I can eek out 4 then its even better.
So, had I known about these when I replaced my bearings
I would have gone the extra small amount and installed
these. They also claim increased steering response and less
vibration due to the decrease in rotational mass.
On Tue, 25 Sep 2007 11:54:04 -0400, "Carolina Watercraft Works"
Realistically figure on a 1 to maybe 2 MPG increase on a fullsized
truck at most with larger amount being in winter when drive axle lube
is thicker and has more drag do to increased shear forces required. (a
small 4x4 might gain a bit more) The silly part is that Dodge choose
to leave out lockout hubs to save maybe 50 to 75 bucks or so on every
truck. (when they had AAM make a new front axle for them starting in
03 for HD models they requested'spec'd that lock out hubs or axle
disconnects be left off too) There was a time when lockout hubs where
the defacto standard on 4x4's but in recent times Dodge did away with
it and even dropped axle disconnect too to save costs and simplify
things. Ford and GM still use either hubs or a axle disconnect so that
front drive shaft does not turn in 2wd. (Jeep suffers Dodges fate too)
I would honestly maybe consider a Dodge some time in future if they
would bring back lockout hubs on HD trucks. Lack of them makes them
more of a no brainer for people that would not know how to use 4x4
with them but if you cannot get out and lock a hub when needed you
should not be in a 4x4 anyway. You could always leave them locked when
you may be using 4x4 a lot but it is plain stupid to be spinning
front drive axle in 2wd cruising down highway. Given todays fuel
market it is pigheadily stupid of Dodge not to include some sort of
lock out hubs or front axle disconnect because it could save owner a
few grand in fuel costs over life of truck given todays and tomorrows
Have you ever used these kits? I have to assume your
answer is NO....so you have no real world experience
on these. While I'm sure you would like to be correct...
and you may be....you have never used these so you shouldn't
speculate on the benefit increases.
I can get an additional 1 mpg increase just by using an additive
to my oil and fuel (zMAX guys: http://www.zmax.com/ ) so
I think the reduced drag from the axles would supply and even
better increase. I may be wrong...but I think 2-4 mpg increase
is possible.....we'll see.
Personally, I'm more likely to trust the manufacturer on the
feedback they have received. What worse publicity could they
receive by giving out false information on gains? It would have
a negative impact IMO. I will most likely be able to provide
my own feedback as I plan on getting this kit.
Let's make a deal eh SnoMan?
The FTC dropped their objections to some specific claims:
# zMAX soaks into metal.
# zMAX reduces friction.
# zMAX increases horsepower.
# zMAX dissipates engine heat.
# zMAX helps to improve or restore gas mileage and reduce emissions in
older cars, by virtue of reducing engine deposits.
# zMAX helps to maintain gas mileage and emissions in newer cars, by
virtue of reducing engine deposits.
# zMAX helps to reduce engine wear on engine valve-stems and guides and
piston rings and skirts, by virtue of reducing engine deposits.
# zMAX helps to extend engine life, by virtue of reducing engine deposits.
"Oil-Chem and SMI will offer a refund of up to $1 million, in the
aggregate, to certain purchasers of zMAX, who bought zMAX before January
31, 2001. No refund will be offered to purchasers after that date."
Apparently zMAX quit some of the fantastic claims on January 31.
There wasn't a class action suit....but FTC did files some charges.
Those were dismissed and if you notice...they still make those claims
so apparantly...there is some basis to the claim. Doesn't bother me
as I do indeed see the increase. Feel free to not consider that
something may actually do something. It's been doing as it has
claimed for me for 2 years now.
On Wed, 26 Sep 2007 09:40:14 -0400, "Carolina Watercraft Works"
I never had too. See I have been owning and driving 4x4 for over 35
years. And back then lock out hubs were optional. Also in 73 Dodge
came out with the orginal version of the same bastard hub they use
today when they had fulltime 4x4 units only on all models from 73 to
79. They went back to lockout hubs in 80 thru 94 then whent to a axle
disconnector on one side in 95 thru 02 with soldi front axle. But you
would know this if you really had a clue.
You can get 1 mpg by driving different for one time to another or
diffence in fuel density due to temp so I would not read anything in
to your one MPG claim
I know you would as you are clueless and they love you for it. See us
old timer that were around before you even knew what a 4x4 was know a
lot more about this first hand. When I forgot to unlock my hubs on a
trip on a few old trucks I had (they were new then) the lost about 1
MPG or a bit more on highway (depending on speed and losses were
closer to 2 MPG or so in winter) and you could "feel" it too as it did
not coast as well. Figure on a 5 to 10% increase tops with it being
higher in cold weather when oil shares harder. Also I might add that
we did not have 75w90 gear oil then and Tcases had gear oil too so
they tended to loose more MPG than a newer one. BTW, to sell it to you
as 2000 dollar kit they are going to have to promise you a lot but if
you going into this expecting 2 to 4 MPG gain you are in for a big
disapointment. Also if you have a big heavy truck gains will be
smaller. Knock yourself but do not tell me that I do not know because
I been around all kinds of 4x4 longer than you. Lock out hubs is a
great idea to save a little fuel and wear and tear but before I would
spend two grand for a conversion, I would swap out to a older solid
axle that has been redone like new as they were very durable and had
very long service lifes. It would be worth it more because you could
them use off the shelve parts to maintain it instead of going from one
bastard design to another non standard design too.
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