Never heard of this before. Thanks! I suppose you could just add liquid naphtha thinner?
Josh On Sat, Jun 13, 2020, 11:35 dwight veinot via CnC-List < cnc-list@cnc-list.com> wrote: > I have some naphthalene moth balls which are basically pure naphthalene. > Naphthalene sublimes from solid crystals to vapour with no liquid phase and > no residue. it also dissolves in gasoline. It is quite effective in > dissolving high molecular weight organics that can mess up small orifices > such as in carbs. So I crush one mothball, add to 20 L of gas in a jerry > can for use in outboard motors, lawn mowers, and other small gas engines. I > use fuel stabilizer for long term storage like over winter in my lawn > tracker and i shut off the fuel supply and drain the carb. My little Honda > 2.3 started second pull on gas left in its tank all winter. If you decide > to try this make sure the moth balls are the naphthalene type. > > On Sat, Jun 13, 2020 at 12:10 PM Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Bruce, >> >> I too have NOT been made aware of Supreme/93 octane being made by default >> without ethanol. The octane rating is often achieved by simply adding >> toluene. I've even seen plans for toluene injection systems designed for >> performance vehicles. As I understand it the octane doesn't add power or >> BTUs/gallon but rather changes the likelihood of combustion due to the heat >> of compression (ping/pre-detonation). I'll look for a better explanation >> and post back. >> >> Anecdotally, I exclusively use 93 octane in ALL my applications and I >> have had small engines with what seem to be trouble due to "stale" gas. In >> many cases they had had previous owners so it is unknown exactly what >> caused the problems or if it was simply age related. The latest was a >> chainsaw which was ~30 years old (my late father's). I didn't perform an >> autopsy but just simply replaced the carb. During the replacement I found >> all of the rubber parts to be in remarkably good condition with the >> exception of the impulse fuel line which kinda disintegrated upon removal. >> With the Mantis Tiller I've shown before, I found the rubber diaphragms >> to be cracked and taking a set. Again, previous owners could have done >> anything so who knows. I've also had two 5Hp Briggs and Stratton engines >> which sat for years with old gas in the carb. They had clear signs of >> deposits and varnish which degraded their performance until it was cleaned >> up. These 2 specific engines were in my care (or lack there of) since >> new. I don't buy low octane gas so the octane could not have simply been >> the cause. >> >> As a side note the first 2 engines were 2 stroke and the second 2 were 4 >> stroke. My diagnosis is that each pair may have experienced 2 different >> failure mechanisms. In the first 2, the degradation of the rubber and >> plastic-ish parts. This is consistent with ethanol related failures. In >> the second 2, it appeared that varnish/deposits had developed and clogged >> the small ports and orifices. This is consistent with allowing the gas to >> remain in the system and ultimately evaporating, leaving behind the >> normally low concentrations of non-volatile substances as deposits. This >> effect is what I believe makes up the varnish. In cleaning these deposits >> I found that carb cleaner was more or less ineffective and that mechanical >> removal was necessary. >> >> Oddly, I believe that both of these failure mechanisms can be prevented >> by "running out" the fuel when done using the equipment. Don't just turn >> of the engine but rather starve it out by shutting of the gas. There may >> be something to be said about the oil in 2 stroke fuel helping to prevent >> evaporation and the formation of deposits. Who knows. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> >> >> On Sat, Jun 13, 2020, 10:16 bwhitmore via CnC-List <cnc-list@cnc-list.com> >> wrote: >> >>> I don't agree, at least here in the U.S. that premium gas doesn't have >>> ethanol in it. There are, however, gas stations that have a pump >>> reserved for non-ethanol gas. >>> >>> Bruce >>> >>> >>> >>> Sent from Samsung tablet. >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> -- > Sent from Gmail Mobile > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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