there have been numerous pix of the deposits, crusting, clogging, and fouling of fuel lines and carbs from gasahol. Meantime, others seem to have no problems with this fuel. In our cars and customer cars we use 4 oz MMO (Marvel Mystery Oil) per 10 gallons of gasahol to help offset these effects. Also, if you were around in the sixties and earlier, you may recall how slippery gasoline felt running it through your fingers. (we cleaned parts all the time with gasoline; never thought twice about it). Today's fuel has a very dry feel to it. So, who knows what the refiners have done, but at least with MMO you also get some upper cyl/valve train lube. A good way to prevent sticking valves.
If you have worked on cars for even a few years, then you have prolly experienced stuck valves. In our shop we have actually freed up stuck valves by running MMO in the gas and a QT in the crankcase, got the engine up to fast idle, and when the motor got hot thanked the valve gods as one by one the cyls. with the stuck valves came back on-line. Most recently we freed up valves this way in a '54 Packard straight 8, which was only running on 4 cyls. Purrs now, tho. Generally, tho, we do not use it in the crankcase.
Overall, your best bet is to use pure gasoline, without ethanol, if it is available in your area. I'd still add MMO for upper cyl and valve lube, however.
If you have worked on cars for even a few years, then you have prolly experienced stuck valves. In our shop we have actually freed up stuck valves by running MMO in the gas and a QT in the crankcase, got the engine up to fast idle, and when the motor got hot thanked the valve gods as one by one the cyls. with the stuck valves came back on-line. Most recently we freed up valves this way in a '54 Packard straight 8, which was only running on 4 cyls. Purrs now, tho. Generally, tho, we do not use it in the crankcase.
Overall, your best bet is to use pure gasoline, without ethanol, if it is available in your area. I'd still add MMO for upper cyl and valve lube, however.
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