fuel mileage test results - Page 3

glasseater · #31 (**permalink**) 04-28-2008, 08:44 AM

Quote:

Originally Posted by phillips91

robbgt-never mind......if i had looked around a little while before asking i would have figured it out lol

haha well seeing how you just have loads of info handy i strongly suggest that you hang around for awhile hahaha

GEugeneS · #32 (**permalink**) 04-28-2008, 11:50 PM

The government hasn't done anything yet except devalue the $ which increases fuel prices - well that and have a lot of "hearings" investigating the problem. But a few years ago they decided that slower does save fuel and mandated a maximum 55 mph law. I wouldn't be surprised to see that happen again

Robbgt · #33 (**permalink**) 04-29-2008, 12:03 AM

Quote:

Originally Posted by GEugeneS

The government....mandated a maximum 55 mph law. I wouldn't be surprised to see that happen again

What???? First we get charged to much or fuel then they say we can't Do 70??? What the *** Is happening to America!!!

884x4broncoII · #34 (**permalink**) 04-29-2008, 03:44 AM

a 55 mph nation wide speedlimit is a bit excessive 65-70 i wouldent have a problem with drive slower for a week and you realize its not that bad, i normaly do 65 on the interstates anymore. sometimes 70.

phillips91 · #35 (**permalink**) 04-29-2008, 08:58 AM

It wasn't a full tank run, but I decided to go ahead and fill up yesterday.

Power service gray bottle doing 65 mph. 178 miles/8.5 gallons=20.9 mpg.

No additives was 18.6 mpg
Power service white bottle was 19.7 mpg.

So far it looks like the gray bottle works the best for me. I should finish the 55 mph run by the end of this week or early next week.

Melvinrwms · #36 (**permalink**) 04-30-2008, 06:06 PM

I have an 97 F-350 with 280000 miles and I only get 10-12 mpg. It runs good, I keep the oil and fliters changes but it stills burnes a lot of gas. What can i do?

Joe_D · #37 (**permalink**) 04-30-2008, 07:53 PM

Hmm... that may be your problem. Have you tried diesel?

Quote:

Originally Posted by Melvinrwms

I have an 97 F-350 with 280000 miles and I only get 10-12 mpg. It runs good, I keep the oil and fliters changes but it stills burnes a lot of gas. What can i do?

onefarmer · #38 (**permalink**) 04-30-2008, 09:57 PM

Quote:

Originally Posted by Melvinrwms

I have an 97 F-350 with 280000 miles and I only get 10-12 mpg. It runs good, I keep the oil and fliters changes but it stills burnes a lot of gas. What can i do?

My 96 F250 PSD gets such good gas milage it doesn't burn any gas.

884x4broncoII · #39 (**permalink**) 04-30-2008, 10:53 PM

well just to add my recent millage check, 227 miles at 65 with 2 stroke oil, pulling an enclosed trailer with a total trailer weight of around 9k used 13.7 gallons 16.7 mpg

i have around 208000 miles on my truck

C350CREW · #40 (**permalink**) 05-01-2008, 08:07 AM

95 with 5sp 4:10's, 55mph 1900rpm, 65mph 2200rpm
anyone taking into account tire size? forgot to look at mine, think they are 265/85/70
speedo has not been recal.

Melvinrwms · #41 (**permalink**) 05-01-2008, 10:58 PM

My 97 PSD use to get good gas milage, I had a diagnostics done and no problems were found, but now I can't even go around the block.

884x4broncoII · #42 (**permalink**) 05-02-2008, 12:10 AM

Quote:

Originally Posted by C350CREW

95 with 5sp 4:10's, 55mph 1900rpm, 65mph 2200rpm
anyone taking into account tire size? forgot to look at mine, think they are 265/85/70
speedo has not been recal.

i have 265 75 16's and the speedo has not been recalibrated to my knowlage but its about 1th of a mile of for every 15 miles checked by freeway mile markers

GEugeneS · #43 (**permalink**) 05-02-2008, 09:31 AM

Quote:

Originally Posted by Melvinrwms

My 97 PSD use to get good gas milage, I had a diagnostics done and no problems were found, but now I can't even go around the block.

I have a friend with a '97 and I think he gets 14-16 mpg on the freeway but I'll ask him today. The guys here talk about poor mileage when the EBP sensor is bad or the tube to it is filled with soot, but I don't even know if a '97 has that same setup. Maybe someone from here can help with that info.

phillips91 · #44 (**permalink**) 05-02-2008, 11:18 AM

Just filled up after running a tank of the power service gray bottle. On one tank i did nothing but 55 mph for the entire tank.

321 miles/13.1 gallons= 24.5 mpg

One my second tank i had about half and half of 55 and 65 mph. I got tired of doing 55 on the 300 mile trip lol.

268 miles/12.1 gallons= 22.1 mpg.

As for tire size, I'm running 265/75 16's. Stock size calls for a 235/85 16, but the 265/75 is the same height. Just a little wider.

GEugeneS · #45 (**permalink**) 05-03-2008, 10:00 AM

Quote:

Originally Posted by Melvinrwms

My 97 PSD use to get good gas milage, I had a diagnostics done and no problems were found, but now I can't even go around the block.

Checked with my friend yesterday and he verified on his 97 psd he's getting between 14 and 16 mpg, driving 36 miles a day on flat highway (1 small hill) and abut 65 mpg. What I should have also asked is the axel ratio and tire size, but I would say that 10 - 12 mpg is definetely low. But with diesel at $4.75 out here, that may be much ado about nothing. I drive the '01 Saturn whenever I can. 40 mpg on the highway, 32 around town (unless I have the a/c going). I only use the truck for pulling my 5er now.