Modern Gasoline Pros / Cons

[cheifrider]

more sadam gas

i need to talk more it says

[cheifrider]

100 bucks a barrel

[cheifrider]

can mmo cause this?

[cheifrider]

last picture

[AFJ]

hey cotten !
just staterd servicing one of the chiefs for the upcoming season , and decided to check out the fuel system ,even though it had been gone through last spring . i dont know much about anhydrous and stuff, but check out the following pics and tell me what ya think caused this.

Looks like lead chloride.

[Magic]

can mmo cause this?

I have been using MMO for over 20yrs and have not had any residue from it and I use those real lead additives along with it too as well as Fuel Stabilizers during the winter months only. I run 3 linkerts and besides the normal mantainance needed everything is fine. I do look at the type of fuel when arriving at the pumps when away from home. Keep riding them, Merlin in Pa.

[T. Cotten]

USA street gasoline has no lead, that's the rule. So the likelihood of such a large deposit of lead salts is highly unlikely.

A carb that I rebuilt last summer was brought back to me this week, for little other reason than to be enameled black. It saw light duty with typical Midwestern pump gas.
The bowl was very sanitary, however a deposit had begun to accumulate at the bowlstem threads.

It has a waxy feel, even when thoroughly air-dried. It still smelled of rancid fuel.
Eye loupe inspection showed a few grains of silica sand (probably from the gastank), but no crystalline structure.
It is not water soluble.
Upon exposure to heat, it burst into flame with a great deal of white smoke, and left a white ash.

Note in the attachment that the bronze casting has started to darken where it was in contact with fuel.

More observation to come, but it seems like only one attachment is allowed per post.

....Cotten

[AFJ]

USA street gasoline has no lead, that's the rule.
....Cotten

The allowable level of lead in US unleaded gasoline is 0.013 grams of lead per liter of fuel.

PT9766

[T. Cotten]

That's why the pumps say "UNLEADED".

If we guestimate Chiefrider's deposits at ~3 grams, then
3g/.013= 230.8 liters, meaning that every bit of the tetraethyl lead from 61 gallons of the highest concentrated fuel would have to be somehow trapped in the bowl.

Just a reality check.

....Cotten

[AFJ]

Probably a mixture of residual gum and inorganic lead (not TEL) if it still has a petroleum smell, and which when burned leaves the "white ash" traces of lead chloride. The trace phosphorus in the gasoline would probably have burned off.

PT9766

[T. Cotten]

Attached is a pic of a fresh float that was just sent back to me from Florida after a VERY brief exposure.
Please note the deposits upon it.

If there is this much lead in USA fuels, we shouldn't have an octane concern, should we.
And if it isn't tetraethyl lead, then what in the hell is "inorganic" lead doing in the fuel in the first place?

....Cotten