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Message started by franch on 09/22/08 at 11:28:38

Title: gasoline quality
Post by franch on 09/22/08 at 11:28:38

So Up until last week i always used high test or premium gasoline.
then i was speaking with my brother in law who said with high prices of gas no-one is using or paying for premium so it sits and sits underground.
I think he is right. you should have seen the crud that came out of my tank and I had just drained it completely when i replaced the petcock. within 4 fillups it was filthy brown and nasty.
I for one will now use regular

Title: Re: gasoline quality
Post by moto fugazzi on 09/22/08 at 13:27:36

I wondered about that.
I was also told that chances are the vehicle that got gas before you filled up with regular gas, and if you were to use premium, the first gallon or so coming out would be "left over" from the previous vehicle.
That means 1/3 of the premium gas you are filling up with would be regular.
Ken

Title: Re: gasoline quality
Post by 07S40rider on 09/22/08 at 14:32:05

45475C474E5D4F49525241280 wrote:

I could see possibly an ounce or two 'left over' but a full 1-2 gallons? I am suspecting that the typical pump that is in place these days is more efficient than that.

Title: Re: gasoline quality
Post by verslagen1 on 09/22/08 at 15:09:37

gotta start filling up where ever the last user filled up with premium. ;D

Title: Re: gasoline quality
Post by Jay on 09/22/08 at 21:55:49

Slightly off topic, so forgive the highjack, but I've been wondering about new gas stations. Around here they pop up all the time. Is there anything to be concerned about regarding sealants, liners, general "crud" in the new storage tanks that I should wait a while before filling up at one of these new stations? There's one about to open near my house, fresh tanks in the ground and everything. It's sat through the rains that drifted our way from Gustav and Ike, so I'm worried about water too.

Title: Re: gasoline quality
Post by justin_o_guy2 on 09/22/08 at 23:59:37

If its really a concern, take a gas can, buy some, go hom,e & pour it off into something clear.

Title: Re: gasoline quality
Post by EssForty on 09/23/08 at 04:06:28

Jay:

No way to fact check this guy, but here is a post from another forum reporting a case like you describe:

Quote:

End of Aug 06, I filled up my car with what I thought was 10 gallons of Sunoco 94. My car requires good premium. The car died 1 mile down the road. It was flat bedded to the dealer and we found that I had actually pumped in 10 gallons of water! Turns out the station/convenience store routinely had this happen after a rain storm. The fill caps for their tanks allowed rainwater to rush in!
Cost me $1250.00... after a couple of weeks of round and round, including filing reports with the PA DEP , Attorney general and the BBB, i finally got them to admit they had a problem when I showed up at their place with a camera while the crews were repairing the fill cap area at the store/station.
I got a check the next week.
I have a safety system on my car for bad gas, alcohol injection. It protects me from bad gas... but not a tank of water.
I'd love to see regular testing of octane.... the engine it saves could be your's!

End Quote

The thread is along the same lines of octane testing. The whole thread is here:

http://www.topix.com/forum/city/king-of-prussia-pa/TMGKSBIDT0F0IPIS9#c7

Title: Re: gasoline quality
Post by EssForty on 09/23/08 at 04:11:16

And since the thread has been hijacked, here's an example of technology solving a problem nobody has. I , for one, would not be sitting on my Savage while this guy fills my tank.

http://www.blogsmithmedia.com/www.engadget.com/media/2008/02/dutch-car-fuelling-robot.jpg

Article here: --> http://www.engadget.com/2008/02/04/dutch-robot-promises-to-fill-your-gas-tank-wont-clean-windshie/

Title: Re: gasoline quality
Post by justin_o_guy2 on 09/23/08 at 07:45:57

3 lines come up into the Box we call teh pump. Each passes thru what is called a computer, but its not at all a computer, but a mechanical metering/charge the customer for each unit of fuel/ "Computer". I dont know if these new pumps have one for ech fuel type. The Pump that sends the fuel is in each buried tank, Pain in the butt to change.
Certainly, with a change in grade being pumped, the contents of the hose will be what was last pumped. How much inside the Pump? To the plumbing where the different types ties together, so, UP from there, & all thru the hose is the last stuff pumped. ID on the hose is about 3/4 inch I think. A quart wouldnt seem too high of an estimate.

I was a maintenance man for a string of stores for a short time.Crazy the crap they wanted me to do. I stood on a 12 foot ladder, standing across the toolbox of my truck, tip toeing on the top of it, to change lights at a station,, twice, then told them No more, Imagine a "West Tx" gust of wind while I was stretched out like that?

Title: Re: gasoline quality
Post by T Mack 1 on 09/23/08 at 09:24:55

Some pumps have one hose (buttons to slect grade) and some pumps have one hose for each grade.

Find the one with the multiple hoses and you won't get the lower grade left in the hose .... but that doesn't slove the crud probelm.....

Title: Re: gasoline quality
Post by Jay on 09/23/08 at 21:48:30

Thanks for the info guys; and again sorry for the hijack. With such a small tank, I try to be careful about what I put in it. It's just not feasable to try to QC each station I use. I try to stick to the same ones around town; but out on the open road, it's any port in a storm. Of course the way my work schedule's been lately, getting out on the open road is more a fantasy than a reality. :P

Title: Re: gasoline quality
Post by EssForty on 09/24/08 at 04:17:30

Regarding the original topic of octane, it should be pointed out that putting premium fuel in a low compression engine designed for 87 octane is just burning money anyway. You'll get lower MPG, less power and you may even get more carbon buildup.

You want to pick a fuel that will combust efficiently under the compression that exists when the spark fires. Higher octane fuels do not provide more efficient combustion at less than targeted compression.

Title: Re: gasoline quality
Post by bill67 on 09/24/08 at 04:48:28

I'm sure that all gas hoses have filters in them,So I think you get pretty clean gas.high octane gas is like retarding the spark,so you will have less power if you use higher octane than you bike needs.

Title: Re: gasoline quality
Post by Royal on 09/24/08 at 13:47:09

Bill67: I think you may be assuming wrong if you think all gas pump hoses have filters in them. Some do but I'll bet most don't. Most filters will not remove water from gas. You have to install a special filter to trap water in gasoline. Even if every pump had a large filter hidden within, it would only be as good as the maintenance it received. I see a lot of stations that the attendant can't even empty the trash can.

Title: Re: gasoline quality
Post by J Mac on 09/25/08 at 20:35:46

LOL. Filling paper towels is a thing of the past too, along with the air hose. I work for an oil company, and my company's franchises are the WORST. Now we get ridiculous 50 cent compressors that can't blow up a balloon. I drive a Ford E350 van for my work vanpool, and the only place I can get enough pressure to put 80 lbs in the rear tires is at a tire store >:(. Today I stopped to get gas, at a branded station, only to find the moron didn't have card readers at the pump. On top of that, I apparently had to pay first, because I could get nothing to work. I packed up and left. "Hello, 1979 called, and they want their gas station back." Talk about hijacking a thread . . .