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WipLash
R/T
3/31/2004
13:57:23
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 Subject: RE: gas millage increasement
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Duraforce,
A friend of mine made his own. He cut the "y" off the y-pipe on his Mopar Performance headers and had an x-pipe welded in place. Then he put a bung hole in the middle of the "x" for the O2 sensor. Instead of dual cats he had a dual 2.5" in/out cat installed close to the x-pipe. From the dual cat he has 2.5" true duals all the way out the back with no mufflers. His set-up ROCKS the house when he nails it. If I had more time to tinker on mine I would do it just like his except I would include 2 mufflers.
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alashaman
Dodge Dakota
JOIN HERE
4/01/2004
16:18:39
| RE: gas millage increasement
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something i have observed. I have a 04 QC 4.7. As soon as i got it off the lot / breakin done i changed the oil out (about 250 miles on it at the time). i happen to have a case in my garage so i used GTX 10w-30 (reccomended is 5w30). I put about 500 miles on the truck and changed it again (finishing the breakin) I went and grabed the 5w30 (GTX also) so i would be running the suggested oil, over the next 1000 miles i watched my MPG, i was getting about 15.5 with mixed highway / city. Prior to running the 5w30 I thought i was getting about 17... so i decided i would test it. Today i changed out to 10w30 again and i got almost 18mpg adverage on my way into work, thats up from 15.5. Im continuing to test this but if im getting that kind of diference Im going to stick with the 10w30. anyone else have any similar observations?
STEVE, AMSOIL rep any comments on this? Im switching to Amsoil on my next change.
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WipLash
R/T
4/01/2004
20:33:23
| RE: gas millage increasement
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Message:
That's interesting. That's hard to believe, but I guess anything is possible. That would suggest that the 5w30 isn't protecting the engine against friction as good as the 10w30. I would think that a quality 5w30 synthetic would out perform either of the 2 GTX weights you tried. I might try a 10w30 one time just to see what happens.
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AmsoilSponsor
DakotaEnthusiast
4/01/2004
22:56:05
| Amsoil = www.american-synthetic-oil.com = MPG
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alashaman,
That is quite a difference!
Could it be that your gas mileage increase could be some other factor than the choice of a different viscosity --- like the change of season.
For instance --- now that Winter is gone --- the fuel additive MTBE is no longer required. If your first test(s) were when you were using an MTBE fuel and your second test(s) were using a NON-MTBE fuel ---- that might be the reason for the increase. I have seen tests where fuels using the MTBE additive reduced MPG by as much as 15%.
__________________________________________________
I know you were hoping I would provide a VISCOSITY answer --- but I think the culprit might be the MTBE additive --- or the lack thereof.
NOTE: MTBE is being phased out across the country. It was introduced as an additive to reduce emmissions during cold Winter months. It is getting into underground water supplies and contaminating our waters. 10% Ethanol and NEWLY Developed Additives will be taking it's place.
The $64,000 Question: Was it better for the government to impose the use of MTBE to SLIGHTLY reduce emmissions --- even though it reduced MPG by as much as 15%. We were forced to burn 15% more fuel and therefore a greater quantity of emmissions could have made it into the atmosphere.
__________________________________________________
A FREE Amsoil Catalog can be requested by clicking below.
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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WipLash
R/T
4/01/2004
23:53:01
| RE: gas millage increasement
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AmsoilSponsor
You could say that about half of the emissions crap they have on our vehicles.
I don't remeber which one, but I read an article on the new Ferrari that it's engine ran so efficient that it has a 2 stage exhaust that bypasses the cats at wide open throttle. I'm almost possitive it was in one of last falls AutoWeek mags. When you floor it a valve opens the exhaust to straight pipes. They tested the emissions on that engine with the cats bypassed and it still passed the emissions standards here in the U.S.
How hard would it be to make all engines this efficient?
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alashaman
Dodge Dakota
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4/02/2004
02:26:39
| RE: gas millage increasement
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Message:
My truck is only 6 weeks old, i have almost 4000 miles on it already and am on my 4th oil change. I drive the same routed to work and back, and watch my mileage carefully. I noticed the drop in mileage as soon as i switched to the 5w30, just to prove that i wasnt crazy i switched back and noticed the gain immediatly. Today I adveraged 17.1 mpg (up from 15.5 on the 5w30), i changed to 10w30 this morning. I am running the same gas from the same gas station and nothing has changed from the last tank i ran just a few days ago other than the oil. I live in california and the past few weeks have been typical 65-75 deg, no noticable difference in weather. From everything i can think of the only difference is the viscosity in the oil im using. I will continue to pay close attention and keep you guys up to date, im half tempted to switch to 5w30 again just for one more test, but i ran though at least 10 tanks of gas (and 2 oil changes during breakin) on the 5w30 and it stuck at a consistant 15.5(give or take .2)
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Bowtie-ZL1
Dodge Dakota
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4/02/2004
06:13:43
| RE: gas millage increasement
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That is interesting.
I am not disputing your posts at all.
But I have experienced the exact opposite affect.
when I was running 5W-30, my mileage would be around 17mpg. When i switched to 10W-30, mileage dropped to 14mpg.
Now I have switched back to 5W-30 and my mileage went to a repeatable 16.5mpg.
So in an effort to increase mileage and be nicer to my truck, I just ordered AmsOil Series 2000 0W-30 full synthetic. I will see how that goes before I sing their praises but shortly after i bought the truck I switched to Series 2000 75W-90 rearend lube and noticed a good amount of desrease of friction and increase of MPG.
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AmsoilSponsor
DakotaEnthusiast
4/02/2004
06:31:38
|  Amsoil = www.american-synthetic-oil.com = MPG
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Message:
WipLash,
Please Re-Read my post.
I was talking about the Government Mandated Fuel Additive MTBE.
I am in agreement with the "emissions crap" comment.
Remember the "cow fart" discussions a few years back.
Seems cow farts are more dangerous to the ozone layer than vehicle emmissions.
Bowtie-ZL1,
I will comment on viscosity issues and how they affect mpg over the weekend.
Thanks for the Amsoil Comments!
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
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TAZ2001
Dodge Dakota
JOIN HERE
4/02/2004
23:06:37
|  RE: gas millage increasement
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I GOT A 1998 DODGE DAKOTA WITH THE 5.2L V8, 4X4, 5 SPEED AND I CAN ONLY GET 12.5 MPG NO MATTER HOW I DRIVE OR WHAT I PULL. NOTHING I DO SEEMS TO CHANGE IT FOR BETTER OR WORSE.
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WipLash
R/T
4/03/2004
12:01:18
| RE: gas millage increasement
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AmsoilSponsor,
I was agreeing with you....
I was simply giving an example of emissions equipment on a performance vehicle to back up your comment. Sorry if you took it as a flame. I was, for once, agreeing with you. If you rather have an argument, we will have to change subjects because I can sit here all day and give examples of how half of these emissions laws are actually increasing pollution instead of decreasing it.
It does chap my ass to get behind some POS bellowing smoke out the back and I have to close my vents so I can breath. Does the law ever write a ticket for this? Does the EPA issue fines to these people? I don't think so. You will get fined a pretty hefty amount for tampering with the emissions equipment on your vehicle. This whole nation is full of Hypocrisy like this.
Much of this is to blame on the Liberals and special interest groups. They have made a killing off this whole emissions standards crap! People believe most of what polititions tell them and therefore allow crap like this to continue.
Ferrari has once again set the standard for automitve performance excellence by building an engine with more HP per CI than anything else out there and it passes emissions without a cat.
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Sephiroth
Dodge Dakota
JOIN HERE
4/03/2004
18:43:25
|  RE: gas millage increasement
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What's sad is that those pieces of crap that burn 10 oil to 1 gas are passed at inspections. They only care about the CO2 and such. Hell, why don't we figure a way to run an engine on just oil? It'd kill our ozone super-fast, but we'd pass emissions 150% every time! American leaders are so stupid in this day and time. You can get pulled for having a light out or for goin 5mph over the limit, but no matter how bad your engine smokes, and no matter how bad tha detonation is, you can drive scott-free!
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Kowalski
Dodge Dakota
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4/05/2004
15:49:57
|  RE: gas millage increasement
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Actually, there is a way to run an engine on oil - they call them diesels ! I've seen people pulled over for excessive smoke; and they don't pass emissions where I am - that would be excessive hydrocarbons (HC). Thought they checked that most places.
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WipLash
R/T
4/05/2004
22:06:47
| RE: gas millage increasement
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Where I'm at they don't check anything. They used to do safety inspections and now they don't even do that.
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Sephiroth
Dodge Dakota
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4/05/2004
22:20:38
| RE: gas millage increasement
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We have a basic inspection to make sure the vehicle in question won't fall into a billion pieces on the road, and my county has emissions. Thing is, I've seen trucks with badly warped parts (tires all wobbly), gushing blue smoke, and pinging like CRAZY driving down the road with new inspection stickers. As long as the vehicle moves and it doesn't burn too much gas, you're OK. It's so f***ing retarded I can't stand it. I have to pay $40 to prove my truck (which I keep in top-notch condition) runs good, just so some idiot can drive in something that is unfit to be driven? Talk about a waste of money! Oh, and we also have to pay like $80 every year because we have 4x4 vehicles. Like I ride on the road in 4x4 with snow-chains on all the time! Maybe I should do just that for a while so I feel justified for paying $80 just to have a 4x4 which I only use in the winter.
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Bob Lincoln
Dodge Dakota
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4/06/2004
13:25:54
| RE: gas millage increasement
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" am in agreement with the "emissions crap" comment.
Remember the "cow fart" discussions a few years back.
Seems cow farts are more dangerous to the ozone layer than vehicle emmissions."
Ignorance reigns.
Methane emissions contribute to smog and global warming, which has NOTHING to do with ozone. Ozone is destroyed by cloro-fluorocarbons, not hydrocarbons. You can scoff at these problems all you want, just get it right when you do. Two separate issues.
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NOX
Dodge Dakota
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4/06/2004
13:55:36
| RE: gas millage increasement
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NOX emissions from the exhaust do destroy the Ozone. It is caused from too high of compression and too lean of fuel mixtures.
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alashaman
Dodge Dakota
JOIN HERE
4/06/2004
15:43:37
| RE: gas millage increasement
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Update as promised.
I am 2 full tanks of gas after switching to 10w-30 from 5w30 and am averaging 16.6 mpg mixed highway / city. This is just about 1-mpg increase over what I was getting running 5w30 (Castrol GTX for both weights) I think that is a fairly significant increase. Pure highway im in the 20mpg range, this is up from the 17mpg pure highway range running 5w-30.
Im going to switch to Amsoil, I was going to use the 0w-30 but this make me hesitant, i might stick with the 10w-30...
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