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O/T gas color

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Nancy Howell

Well-known Member
We use gas cans to fill the tractors. We generally to to Murphy (WalMart) because of the discount, but sometimes go to other stations. I've noticed that some of the gas is yellowish in color and some of it is clear. Could the yellow color be from ethanol?
 
Ethanol is clear most times.

Around here the colors vary as well.

Even if I buy from the same place it still varies when they get a new shippment in.

Gary
 
Gas has been really cruddy this year here. I have had more trouble with small engine carbs than ever before. I have filters on em all and use Stabil as I have fot 7 years....

I wonder if some of the gas we have been buying as fresh has been sitting in storage a long time due to the reduced demand?
 

Gas seems to be really cruddy any more.Friend of mine recomends a bit of stabil or some such all the time in lawn mowers to keep it flowing right.
 
Had my carburetor re-built on my tractor, the guy who re-built it said, because of the "different Gas" being made, he cannot guarantee it won't leak gas, even with new parts installed.

after a few weeks, I have noticed that the Carb is wet with gas on the outside, so it must be leaking gas,

the guy who re-built the carb, said I should shut off the gas every time I shut down the tractor, that seems to be a pain, just for a gas problem, never had to do that over the past 22 years owning a tractor.

I am wondering if I should put in a lead additive in the gas, wonder if that will help, maybe I should try it out, I'm sure tractors made in the 50's and 60's where built to use lead gas.
 
He's stroking you I rebuild them and I give a 90 day gaurantee for everything. The three on my Farmall's also don't leak a drop. Truth is, if it will leak one type of gas it will leak ALL types of gas.
Take it back and have him do it right.

Gordo
 
Can you give me the name of your business, I can send the Carb to you, I don't need to argue with any one about their work, but will pay to get the best job done.
 
AS far as I know tractor carbs have always leaked a little. Ever since I was a boy (1930's)I was told to turn off the gas at the tank.EWvewn now I still do it as a regular thing. Most old tractors are updraft and sit lower that the gas tank (useing no fuel pump) and are prone to leaking. Could be fatal if gas leaked in a closed shed.. As far as gasoline being different at the same stations, it is bought on the open market from the cheapest wholesaler available. I worked for a gas retailer and we sold gasoline from almost every company available. The only diffewrence that some stations have is an additive package usually added in the tanker when purchased Henry
 
How is a lead additive prevent carb leaks? The lead substitute is snake oil anyways as you can't purchase tetraethyl lead.
The old carb body could have warped over the years. Did you machine the mating surfaces flat. Then chamfer the female threads? They can pull up and prevent the halves from mating tight.
If you want gasoline that stores without going gummy. Take a 5 gallon can to the local airport and purchase some 80 or 100LL
 
Stabil will get in the pickup tube in the tank on a small engine and plug it.I found that out on my tiller this spring.Small engine man took it apart while I watched,took the screen out,blew it out,put the screen back in and fixed it when it wouldnt stay running with the Stabil plugging the line.
There is nothing about Ethanol in gas that would make it leak more.If your carb leaks after being rebuilt it wasnt rebuilt right.I have used 2 gaskets to fix a problem like that before,or the others suggestions of chamfering the holes and getting the surface flat sound like they would fix it too.
I would think the clear gas would have the Ethanol in it,but I dont know for sure.Some places try to gouge you for premium and maybe they have it different colors so they can tell which grade it is?
 
Filling up yesterday I noticed it was blue. Can't remember where I was, but I think it was Shell. Could blue be that new Nitrogen enriched stuff they're pushin?
 
I used to haul cattle with my pickup and gooseneck trailer years ago throughout the south and midwest had a portable tank in the bed with farm gas in it I had just finished emptying it before leaving Miss. when I had to stop at a weigh station I pulled off the scales when the officer waved me to the side and said I need to see in your portable tank so I flipped the lid I said it was empty and he didn't pay any attention he used a wooden stick looking for color. I said what's that all about and he said road taxed gasoline and diesel fuel is a different color than farm gas. He said have a nice days boys be careful.
 
If your carb is leaking then there's a problem with the float needle and seat valve, or you may have a leaky float. Blaming it on "different gas" is an easy out; it takes years, not weeks, for ethanol to attack the seals in your carb. Plus most carburetors have very few places where fuel can leak out if the float is working properly.

Regardless, it is a very good habit to shut off the fuel if you have a gravity-feed system. Any leak can result in a tank full of gas leaking out on the ground or (worse) onto your shop floor. Put ten gallons of gas on your shop floor, add one cigarette and they'll hear you in the next county.
 
Ethanol should be clear, unless they're mixing bourbon and scotch with their gas.

Almost all gas has some ethanol in it. There is an easy test for the presence of ethanol in gas: Pour some water in a jar, maybe a half inch or so. Mark the water level on the outside of the jar. Then add some gasoline to the jar, a couple of inches should be good. Looking at the side of jar, you should be able to discern the separation of fuel and gasoline. If this level is higher than the original water level, you have alcohol in your gas.
 
Hello Nancy,
Gas color/hue is different from each company.
Additives and processes make it a bit different.
It also each different product/gas has a chemical signature, under a spectrometer?, if i recall correctly. Some one here may clarify it better then i can.
Guido.
 
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