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$28 for a Gallon of Gas?
Nov 30, 2023 08:58:43 #
Reuss Griffiths
Loc: Ravenna, Ohio
petrochemist wrote:
Avgas 100LL is the normal grade of aviation gasoline, it's octane is higher than 100, but it contains quite a lot of lead considerably more than road fuel (even though the LL part of the name is for low lead).
As you may know, lead was dropped from automotive grades of gasoline because it presented a significant exposure to people. Not from an acute point of view, the LD50 for a 150 lb. adult is over a half a pound but it did present significant exposure issues over time and most of the lead residues from burning leaded gas ended up within 100 ft of roads where people would easily come in contact with it. Adults can tolerate low level exposures but there are no safe levels for children. Then there is the carcinogenicity issue on top of it.
None of these issues are presented from burning lead in aviation gasoline,
Nov 30, 2023 09:13:39 #
jerryc41 wrote:
Remember when Sunoco had the dial on the side of the tank. I think 100 octane was the highest - octane and price.
I worked for them. They had two tanks, one with the lowest octane and one with the highest. They were blended at the pump.
Nov 30, 2023 11:28:21 #
sodapop wrote:
I worked for them. They had two tanks, one with the lowest octane and one with the highest. They were blended at the pump.
Ah, yes. I remember that now.
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Nov 30, 2023 11:55:54 #
dwmoar wrote:
I suppose the next big advertising hit will be for liquid water....
There are some places where you can leaded gas. Some Marinas and Amall airports
Nov 30, 2023 12:16:44 #
petrochemist
Loc: UK
Reuss Griffiths wrote:
As you may know, lead was dropped from automotive ... (show quote)
Yes, that's why I mentioned it.
AvGas 100LL has a lead specification of maximum 0.56g/l lead (some other AvGas blends go as high as 1.6g/l)
IIRC the maximum allowed in unleaded road fuel is 0.016 g/l, but even this is huge compared to the specification of petrochemical naphtha which typically has a maximum of 40ppb (parts per Billion).
Nov 30, 2023 12:17:13 #
Frank T wrote:
True fuel is not exactly gasoline and oil. It has a three-year shelf life and won't clog your carburetor, as regular gasoline will, if you let it sit. Admittedly this is not for the regular user. If you're mowing your lawn every week, you certainly don't need it, but if you have a snowblower that you use once or twice a year, it makes sense.
Adding some Stabil to the mixture for about 5 bucks for enough to treat something like 100 gallons provides the shelf life extension and it's still cheaper than True Fuel.
Dec 1, 2023 08:40:25 #
Stabilized or not, I've been starting engines that have spent months "resting" for years. I often use a bit of starting fluid in the spark plug hole or the air cleaner. I don't always know when an engine will sit idle, so I don't always know when to add the Sta-Bil.
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Dec 3, 2023 07:51:35 #
I was up in northeastern Quebec this week and paid the equivalent of 11.00$ can/ gallon 2.459 per litter
Dec 3, 2023 08:51:17 #
Fotoserj wrote:
I was up in northeastern Quebec this week and paid the equivalent of 11.00$ can/ gallon 2.459 per litter
I bet you don't see as many large vehicles when gas is that expensive.
Dec 3, 2023 12:24:28 #
Wyantry
Loc: SW Colorado
jerryc41 wrote:
As I was walking through Lowe's this morning, I no... (show quote)
What exactly, pray tell, is a “3-cycle engine”?
Dec 3, 2023 12:32:41 #
Wyantry wrote:
What exactly, pray tell, is a “3-cycle engine”?
I see that you're out west, so you're probably not familiar with them. That's what we in NY called a "typo" - a typing error. 😁
Although, a Wangle engine - "...resulting in the rotor making one complete revolution for every three revolutions of the eccentric shaft."
Dec 3, 2023 12:38:19 #
Wyantry
Loc: SW Colorado
dustie wrote:
Maybe.........yeah........could be.
Those newest of the new, green technology, eco-overly friendly, carbon forwardly planning 3-cycle engines can not be treated with the old, out moded, double-antiqued, eco-killing 2-cycle technology. 😁 😄
Those newest of the new, green technology, eco-overly friendly, carbon forwardly planning 3-cycle engines can not be treated with the old, out moded, double-antiqued, eco-killing 2-cycle technology. 😁 😄
Dec 3, 2023 12:45:02 #
jerryc41 wrote:
I see that you're out west, so you're probably not familiar with them. That's what we in NY called a "typo" - a typing error. 😁
Although, a Wangle engine - "...resulting in the rotor making one complete revolution for every three revolutions of the eccentric shaft."
Although, a Wangle engine - "...resulting in the rotor making one complete revolution for every three revolutions of the eccentric shaft."
Never heard of the "3 stroke" engine but Mr Google told me there is such a thing and it's a relatively new invention.
https://patents.google.com/patent/US8215268B2/en#:~:text=A%20three%2Dstroke%20internal%20combustion,piston%20within%20a%20single%20cylinder.
Dec 3, 2023 12:47:14 #
BebuLamar wrote:
Never heard of the "3 stroke" engine but Mr Google told me there is such a thing and it's a relatively new invention.
https://patents.google.com/patent/US8215268B2/en#:~:text=A%20three%2Dstroke%20internal%20combustion,piston%20within%20a%20single%20cylinder.
https://patents.google.com/patent/US8215268B2/en#:~:text=A%20three%2Dstroke%20internal%20combustion,piston%20within%20a%20single%20cylinder.
Yes, I remember hearing about that, but I didn't look for it. I doubt it will become a commonly used product. Interesting design, though. He's probably hoping that someone will buy the rights to it.
Dec 3, 2023 12:59:33 #
Reuss Griffiths
Loc: Ravenna, Ohio
jerryc41 wrote:
Yes, I remember hearing about that, but I didn't look for it. I doubt it will become a commonly used product. Interesting design, though. He's probably hoping that someone will buy the rights to it.
I believe that the Wankel engines were first used in the Mazda Miata. They have a great power to weight ratio but somewhat low fuel efficiency. Mazda used them for many years but discontinued them in 2017 but are reintroducing them again. Used in racing for many years because of the P/W ratio.
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