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  Topic Review (Newest First)
12-02-2019 10:58 PM
Gator1
Quote:
Originally Posted by steve05ram360 View Post
what did your do over mpg run give?
Didn't do it yet.
11-30-2019 02:07 PM
steve05ram360
Quote:
Originally Posted by Gator1 View Post
Ya, I can do that, I have a 50 gal tank in the bed with a vent and roll over valve on a riser so it's always above fuel level, and the neck is 3-4 inches above level also. So as long as I get fuel into the neck it would be really accurate.

Good luck on your run today.
what did your do over mpg run give?
11-28-2019 10:23 AM
Gator1 Ya, I can do that, I have a 50 gal tank in the bed with a vent and roll over valve on a riser so it's always above fuel level, and the neck is 3-4 inches above level also. So as long as I get fuel into the neck it would be really accurate.

Good luck on your run today.
11-28-2019 10:13 AM
steve05ram360
Quote:
Originally Posted by Gator1 View Post
True, that's the way I will do it next time I do a strictly mpg run.
i have a vent kit on my tank so every fillup is up to the neck. after the first auto shutoff, i hit the pump again until the next one then done. i always can see the fuel in the neck...

200 mile run this morning on that same route that gave the 25, ambient temps are 28-35* should be interesting. i would expect low 20's pre-pulley & EWP...

will fill up afterwards, noonish...
11-28-2019 09:41 AM
Gator1 True, that's the way I will do it next time I do a strictly mpg run.
11-27-2019 08:06 PM
steve05ram360
Quote:
Originally Posted by Gator1 View Post
That filler neck method is bad, I got 13 mpg today100 mile trip running in some hills and VERY windy conditions. I will try the filler neck method again on a flat road where I got 33.
Its the only way to do it without having a 5 gallon container (or some known quantity) and running it dry.
11-27-2019 02:56 PM
Gator1
Quote:
Originally Posted by spooled05 View Post
You have to start out with it filled to a certain spot in the filler neck , than fill to the same spot every time to get repeated results , as you already found out how much it can vary from different fill rates .
Ha, that was my attempt at humor...I did fill it up to the inside of the neck, it's longer than I thought, so it was safe to do. But, I need to try it again on flat ground, when the wind isn't gusting to 100 mph.
11-27-2019 02:53 PM
spooled05 You have to start out with it filled to a certain spot in the filler neck , than fill to the same spot every time to get repeated results , as you already found out how much it can vary from different fill rates .
11-27-2019 02:42 PM
Gator1 That filler neck method is bad, I got 13 mpg today100 mile trip running in some hills and VERY windy conditions. I will try the filler neck method again on a flat road where I got 33.
11-27-2019 11:34 AM
steve05ram360 get it up to operating temp, then do it, if possible do a 120-130 mi run, if 33 is true, it will be cheap lol
11-27-2019 10:55 AM
Gator1
Quote:
Originally Posted by spooled05 View Post
On my truck filling it up till it clicks off will get readings all over the map for mpg , I fill up till fuel is visible in the filler neck at a certain spot for good results.
Ya, I hear you on that, but I used to get 16 mpg this way regularly for 15 years on this truck. I would only expect it to vary by 1 mpg by using the auto shut off.

I may do another run today (longer) and try the filler neck method. But my tank is in the bed and the neck is short, I'm afraid I'll get fuel splashed everywhere. Ah the things we do for science...
11-27-2019 10:49 AM
spooled05 On my truck filling it up till it clicks off will get readings all over the map for mpg , I fill up till fuel is visible in the filler neck at a certain spot for good results.
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