Gas up as the tanker leaves - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
General V-Strom Discussion Talk about all things V-Strom not limited to just one of the above models

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post #1 of 18 Old 08-16-2017, 04:45 PM Thread Starter
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Gas up as the tanker leaves

According to the old myth its best to move on if the fuel tanker is at the pump. The theory is that pumping fresh gas into the underground tank stirs up the gunk that is settled. Fact or fiction?
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post #2 of 18 Old 08-16-2017, 08:00 PM
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It's 'possible' but IMHO not 'probable' that gunk would get from the underground tank to our tanks. The tanks have filters on them to prevent the 'gunk' from getting out of the tank plus our vehicles have filters between the fuel tank and the engine.
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post #3 of 18 Old 08-16-2017, 08:17 PM
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I'd say maybe, but I'm not going to go out of my way to another station. I carry a spare fuel filter on long trips, just in case. It's not something that abruptly fails, you'll notice the bike bogging down on hard throttle long before it fully clogs.
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post #4 of 18 Old 08-16-2017, 08:51 PM
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I'd say only remotely a problem, and only at a remote rarely used station. Most turn over their supplies quickly. Water is probably more likely.

I do however agree with the theory that the best time to fill is early morning when it is cooler. Large aircraft load their fuel by weight.
I also watched the last MotoGP and noticed the mechanic instructing the umbrella girl to shade the gas tank from the sun. Another team had an insulated tank cover while on the grid.

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post #5 of 18 Old 08-16-2017, 09:06 PM
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I am a nut case. If the truck is there, I continue to the next station.

The company I work for has a group that does UST pulls. We made a fortune when everybody was yanking and upgrading storage tanks. The shit that came out at the end, when we pumped the old ones dry, was hideous some times. It was so bad it would be sent to an environmental recycler instead of put back in the new storage tank.

At a "Flying J" or other well used, interstate highway station you are probably fine. The mom and pops......maybe not.
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post #6 of 18 Old 08-16-2017, 10:13 PM
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There is also a filter in the pumps. They have a check ball that stops flow after a certain volume, so they have to be changed even if the station employees are lazy and don't want to. And fresh gas is like fresh coffee. (But I wouldn't recommend drinking it.)

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post #7 of 18 Old 08-17-2017, 01:13 AM
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If it was a problem, then you'd see a lot of cars broken down close to every gas station, due to bad fuel. Think about how many cars get fuel from how many stations every day right after the truck was there.

It's not an issue.

The temperature of the fuel underground does not change appreciably from night to day. Very slightly maybe from winter to summer, but not on a daily basis. A ten-thousand gallon tank is about eight feet in diameter and there's several feet of soil and a concrete pad on top of it, so that much mass with all that insulating dirt stays pretty much the same temp. Now, fuel in an airport fuel truck definitely DOES heat up and expand on a hot day, which is why trucks and airplanes have vents to allow for the expansion.

https://www.consumerreports.org/cro/...n-it/index.htm

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post #8 of 18 Old 08-18-2017, 11:34 AM
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Total non-issue in 2017.

There are several steps of filtration and water removal between the underground tank and you.


This might have been a problem in 1957, but old mechanical legends have a way of hanging around decades past the point when they had any truth to them.

For example, battery cases haven't been made of rubber for 50 or 60 years, yet there are still people who firmly believe placing a battery on a concrete floor will make it discharge. I was once helping a neighbor fix a headlight or something on his truck, and I removed the battery and placed it on the driveway. He immediately let out a yelp and rushed to pick up the battery. He stood there like an idiot holding it for half an hour because his grandpappy once told him never let a battery sit on concrete. No matter what I told him, he wouldn't even put it down anywhere else, and insisted on blowing out his elbows because grandpappy couldn't possibly have passed on a badly outdated urban legend.

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post #9 of 18 Old 08-18-2017, 12:14 PM
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Old wives tale.

Unless it is from a station that still has the glass globes at the top of the pump, there just isn't going to be anything to worry about. About all tanks have been replaced over the last couple decades and these tanks won't degrade like older ones did. There are devices in place that monitor and can remove water and stuff from most of these newer systems. Yes, there are filters on these systems.

My Brother in Law delivers fuel in Houston. Some of these stations have two tankers assigned to them and they run two shifts just hauling fuel to that station. Others are brought in on high volume days. Even the ones that get one load per week are not going to be an issue. But, if passing a station up because a truck is unloading gives you peace of mind then that is good.

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post #10 of 18 Old 08-18-2017, 09:59 PM
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Never give it thought. I do try to gas up at major highway points before venturing off so I don't have to worry about those out of the way places.
I've been lucky though and not had a problem when I was no where and needed gas'
I worry more about the storm clouds I'm riding intpo.
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