miles off a tank

[kingal3]

I believe hes using canadian gallons.
I forget the exact conversion but his 47 is about = 35. Which is still very good.

Sorry,
These gallons were all american...as were the miles. I am not sure why this is so hard to believe. This was for 319+ miles out of a roughly 2500 mile trek from Georgia to California. It should be a well known conclusion that when you drive slower than the posted highway speeds, then your mileage will greatly increase.

Unfortunately, I feel we are getting a bit more off topic than I had intended. Apologies.

Cheers.

 

[SocialStealth]

Sorry,
These gallons were all american...as were the miles. I am not sure why this is so hard to believe. This was for 319+ miles out of a roughly 2500 mile trek from Georgia to California. It should be a well known conclusion that when you drive slower than the posted highway speeds, then your mileage will greatly increase.

Unfortunately, I feel we are getting a bit more off topic than I had intended. Apologies.

Cheers.

Wait...do you have some type of cali version of the p5? (killit)

If not, please share with us your maintenance secrets! (upyours)

 

[kingal3]

Wait...do you have some type of cali version of the p5? (killit)

If not, please share with us your maintenance secrets! (upyours)

I purchased it in Hawaii, but the emissions standards were and are California.

My maintenance secrets include regular washing once or twice a month, regular oil changes every 3 to 6k miles at a dealer, regular maintenance at or near the recommended intervals, observing and adjusting the tire pressure as needed. Really, nothing out of the ordinary.

Keep in mind, the 45 MPG was a one time deal, although for the entire trip I achieved 39.48 MPG.

 

[SocialStealth]

my best MPT = 452.6

related:
best MPG = 45.51 (during cross country trip traveling between 45 and 55 mph)
most gallons filled: 13.437

each of these were on separate occasions.

How exactly are you calculating your mpg???

Your best mpt reveals an average 33.68 mpg (assuming you exasperated 13.437 gallons). Your MPT should have left you with a nearly empty tank, which would result in your 'most gallons filled'.

In order for your best mpg NOT to be your mpt, you would have had to use less than 9.95 gallons. So you filled up when your tank was @ >30% ??

I believe there is a flaw somewhere in your calculations. Please explain how you did your calculations. Its normal for manufacturers to exaggerate their mpg, If you got 45 mpg, I think they would be paying you to be their spokes person.

 

[SocialStealth]

increasing your tire size can cause up to a 5% misreading in your sensors, but this doesn't account for your 25% jump in mpg over the estimated highway mpg of the car (bicker)



....wait.....what kind of car do you have? Is it the new 2010 p5? (evil)

 

[kingal3]

How exactly are you calculating your mpg???

Your best mpt reveals an average 33.68 mpg (assuming you exasperated 13.437 gallons). Your MPT should have left you with a nearly empty tank, which would result in your 'most gallons filled'.

In order for your best mpg NOT to be your mpt, you would have had to use less than 9.95 gallons. So you filled up when your tank was @ >30% ??

I believe there is a flaw somewhere in your calculations. Please explain how you did your calculations. Its normal for manufacturers to exaggerate their mpg, If you got 45 mpg, I think they would be paying you to be their spokes person.

Remember, I noted that "each of these were on separate occasions" meaning that on one fill up I totalled 452.6 miles, another I achieved 45.51 MPG, and still another, I achieved 13.437 gallons. Was merely pointing out the highest numerical value for each category.

You are partly correct in your assumption that I filled up at under "9.95 gallons". But, you shouldn't have had to make that assumption since I provided the details of the fill up earlier in the thread.

Calculations are as follows: mi/gal = mpg

I'll provide the details of that single fill up again here:

"details of that fill up...
Date: 10/13/2004
Gallons: 7.025
Miles: 319.7"

Additional information (some previously mentioned) for miles traveled on this fill up: no stops between this fill up and the previous fill up; relatively level terrain; no load; single passenger (unless you count a feline); traveling speed between 45 and 55 mph; daytime; no vehicle modifications (unless you count a car bra which was is use at that time); properly serviced; factory tires; tires properly inflated (perhaps a bit on the firm side); all highway miles.

cheers.

 

[kingal3]

increasing your tire size can cause up to a 5% misreading in your sensors, but this doesn't account for your 25% jump in mpg over the estimated highway mpg of the car (bicker)



....wait.....what kind of car do you have? Is it the new 2010 p5? (evil)

Correct, variance in tire size from the factory recommended size can cause sensor misreading, however, this was not the case. Actually my reported mileage is closer to a 50% jump over the estimated 31 Hwy for that model year.

2010 P5? If only. Could you imagine factory-made Mazdaspeed Protege5? Probably wouldn't be much different than the MS3, but sitll.

Remember, the biggest factors in this mileage jump are due to the traveling speed during those miles and a relatively constant rate of speed.

 

[SocialStealth]

/disbelief

Can anyone explain this phenomenon?

 

[kingal3]

/disbelief

Can anyone explain this phenomenon?

Yes. Cruise control at 50 mph in 5th gear and low RPMs. Beyond that, I lack the knowledge to offer a better explanation. Well, let me add slow acceleration to that: when following a fully loaded 20 to 24ft U-Haul towing a Pick-up on a trailer, you have no choice but to accelerate very slowly, saving additional fuel. Essentially, we were practicing hypermiling techniques before I even knew of their existence.

 

[idrift4wd]

i really doubt all of you, i can BEARLY hit 300 maybe once or twice.

i dont understand how you guys get over 350+ i think thats impossible. possibly i have an auto but still. even by manufacture epa estimated mpg you guys are getting close to prius calculations. thats just impossible.

 

[blatantsilence]

sole owner of a 03 p5, i logged everything i did.. i averaged between 280-320miles per tank.. milwaukee county freeways have alot of hills. my drive was a consistent mixture of city / freeway. my light would normally kick on about 280miles.. i never ran it empty, oil changes and tune ups were regular maintenence.. i believe i did managed close to 380 one tank on a road trip to pennslyvania.. i tried changing my driving habits, seeing if that would help, but that lasted 1 tank and i seen no difference, so, back to lunatic mode..

 

[idrift4wd]

yes^ that sounds ALOT more believable. finally some realistic numbers.

 

[kingal3]

New question, old topic.

How many miles have you been able to squeeze out of one tank? (Resetting odometer at full, of course).

Ever noticed any difference between premium, plus and reg.?

I've tried different grades of gas sporadically, but I haven't noticed appreciable differences. The vast majority of my fill ups have been at 87 octane.

 

[shadow191]

If he was drafting the U-Haul truck, I could see it happening.

FWIW, I'm unimpressed with the P5's mileage. For as little power as it has, I thought it would get better mileage. I average 250-260 a tank in all city driving (13 gallon fillup so around 20mpg). For comparison, my IS350 with more than double the hp gets 18.5mpg in the same circumstances. And that car has 20"s on it. My brother's G35 gets better than 20mpg in the city. Yes, the P5 is maintained and kept tuned up. Even on the highway, I don't get much better than 26mpg or so. It's an automatic, does it make that much difference? The only time I've gotten anywhere near 30mpg is on a very flat stretch of highway going 65mph. Any faster than that or if I encounter any hills, the car has to work so hard to keep the speed up and mpg drops a ton.

/disbelief

Can anyone explain this phenomenon?

 

[kingal3]

If he was drafting the U-Haul truck, I could see it happening.

FWIW, I'm unimpressed with the P5's mileage. For as little power as it has, I thought it would get better mileage. I average 250-260 a tank in all city driving (13 gallon fillup so around 20mpg). For comparison, my IS350 with more than double the hp gets 18.5mpg in the same circumstances. And that car has 20"s on it. My brother's G35 gets better than 20mpg in the city. Yes, the P5 is maintained and kept tuned up. Even on the highway, I don't get much better than 26mpg or so. It's an automatic, does it make that much difference? The only time I've gotten anywhere near 30mpg is on a very flat stretch of highway going 65mph. Any faster than that or if I encounter any hills, the car has to work so hard to keep the speed up and mpg drops a ton.

Drafting was not performed. Besides, at the 45 to 55 mph speeds we were traveling, drafting would have been less beneficial than at the typical 65 to 70 mph hwy speeds.

 

[SocialStealth]

If he was drafting the U-Haul truck, I could see it happening.

FWIW, I'm unimpressed with the P5's mileage. For as little power as it has, I thought it would get better mileage. I average 250-260 a tank in all city driving (13 gallon fillup so around 20mpg). For comparison, my IS350 with more than double the hp gets 18.5mpg in the same circumstances. And that car has 20"s on it. My brother's G35 gets better than 20mpg in the city. Yes, the P5 is maintained and kept tuned up. Even on the highway, I don't get much better than 26mpg or so. It's an automatic, does it make that much difference? The only time I've gotten anywhere near 30mpg is on a very flat stretch of highway going 65mph. Any faster than that or if I encounter any hills, the car has to work so hard to keep the speed up and mpg drops a ton.

Have you seafoamed your engine//cleaned your egr valve? This increased my mpg by about 3

 

[MonkeyBone]

How do you guys hit 500 miles with one tank? Driving like a granny at 40 mph on the highway? In 1 direct drive?

My best was 350 miles. Driving like my mom.

I average 290-300 miles. I drive the little PO5 the way it was meant to.

 

[SocialStealth]

What is the best company to buy gas from in the US?

ex: sunco, coastal, exxon, shell, wawa (rofl)

I hear people saying that some gas companies water down their gas. And all the prices are relatively the same, give or take a penny.

So which station should I fill up at?

 

[idrift4wd]

shell is the way to go imo

o yea drafting is only useful if the truck is going about 80-85 mph and your front bumper needs to be on the trucks ass. you need to be impossibly close to actually use drafting as an advantage.

 

[kingal3]

I've hit 460+

I've put like 14.9 gallons in- and that's auto pump shutoff, not me blipping the pump to get as much as possible.

So far it appears top honors for most miles per tank (MPT) goes to Mr. Mike R. Congrats. Can anyone top that mark?

Anyone else have have some long haul feats to present? Certainly there must be others who belong to the 450+ club. I count three so far.