Look how much I topped off!!!

o9stealth5

New member
So I noticed that the range indicator sometimes says 375 and up until recently, my record was 397 when I filled the tank all the way up. But two days ago, I topped off at a Shell station and I hit 400!!! Has anyone else hit 400!?
 

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Mine read 398 miles one time when I was on a long road trip. I have the v8 and mine usually averages in the 370's.
May just be me, but do you notice the Shell gas giving you better mileage?
 
I'm now consistently ~440 without topping off. I think the mileage sucks, but you guys are making me feel a little better.
 
Mine is consistently in the 320 range. I might have seen it start around 340 once but never higher.
 
Usually around 390-400 something or other. I've been getting fairly good gas mileage the last few weeks. :)

-Jason
 
I have noticed about 2mpg increase as the engine has steadily been breaking in. since 5kmi, it has been getting better faster. Can't explain. Now at 7800mi.
1100mi... that is a nice shiny new 4R!
:)
 
Dude, how accurate are those range meters anyway?

When I first got my rig, 397 was the most I've got, but since then it has dropped, never ever gets back up to 397, 360 at the most. Although, when I got repairs done, the battery was unplugged and it went back up to 397, but hasn't gone that high since.

422? Damn, anyone know why that is?
 
The mileage estimate is computed by multiplying the estimated average miles per gallon times the amount of fuel in the tank. If you overfill the tank or have recently had good gas mileage, you'll get a higher estimate of range.

FWIW, I have noticed a big change depending on my driving habits and where I've driven to. For a short while last month it was a lot of local driving, stop/starts and redlights, and the fuel estimate was in the 340's on a full tank. The rest of the time I drive a long 60 mile round trip on the interstate 6 days a week. It's pretty flat around here, and if I keep my speed to <70 mph with the cruise control on, I see my MPG estimate get in the 19's.

If you've been having bad gas mileage recently, try resetting it and see what happens. You may have some bad estimates from a while back ruining your estimate. I reset mine with every other fillup.

-Jason
 
ricedo said:
Dude, how accurate are those range meters anyway?
I find that with my driving habits, it tends to understate the range.

We had a long road trip where I was getting over 22mpg measured....when multiplied by the 23 gallon capacity, that works out to 506 miles range.
 
as the miles go on, the range goes up for me at least. when i first got it, i was getting 316. over the last few months, it has gone up from 316 > 321 > 333 > 344. currently i have 4600 miles on it since jan-13-04.
 
are you a typical human. do you feel the need to cram as much fuel as the vehicle will take. are you standing at the gas pump inching those last few pennies of gas into your resevoir. STOP. this can permanently damage your vehicles fuel system and potentially cost you a lot of money.

The reason this is a NoNo is fairly simple, but a brief background of the operation of the systems involved is necessary.

Here we Go......

First and foremost the system that is most affected is the EVAP system. The Evaporative Emissions System is designed to remove the fuel vapors from the tank, filter them, them send them into the engine at the right time to be burned. On new vehicles,(1996+) it was decided to design a system to extract the vapors from the fuel tank and have them be used by the engine for combustion. This system employs a myriad of components, the components we will be focusing on today are the Charcoal Canister and the Leak Detection Pump. Most vehicles will have some iteration of these devices.

Now, when you are dripping those last few ounces of fuel into the filler neck, you are essentially flooding the vent tube system on the tank. These hoses are NOT designed to handle liquid fuel and leaks can result. This also affects the Charcoal Canister(CC). This is another device that WILL NOT handle fluid. The CC is the most damaged item here. Raw fuel destroys the activated charcoal in this filter and it's performance will degrade to the point of complete ineffectiveness, normally resulting in a Check Engine Light. There are also a number of check-valves that can be harmed, but this is rare.

The other problem is with the LDP. This system continually checks the fuel tank and associated systems for any kind of leak by PRESSURIZING the fuel tank. If this system cannot pressurize the tank(too full!!), it will also register a Check Engine Light. It is aslo possible for the raw fuel too creep up to this pump and destroy the motor. Again, another check engine light.

There is one way to prevent this, when the handle of the gas pump clicks, YOU ARE FINISHED. DO NOT FILL further. Easy huh?.?.?.?.?

Now, I don't know where you work, but diagnosis for a check engine light here is $74.00
That DOES NOT INCLUDE repair, only scanning the vehicle and clearing the light. This kind of fault is not easily duplicated, but any competent shop should know what an overfilled tank can do and recognize the associated faults. Too bad there are not may competent shops.......

guess that is it, just felt like ranting about something i see everyday
 
Darktiger...

great info. I've heard that topping off was a NoNo, but never knew why. Now I know...and knowing is half the battle.
 

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