|Topic Review (Newest First)|
|02-20-2018 06:50 AM|
Originally Posted by sunlight99 View Post
|02-20-2018 01:00 AM|
|sunlight99||Toro manual says to drain the fuel in the carburetor after running the engine dry, is that needed?|
|02-19-2018 08:50 PM|
I didn't believe it myself, but here's pretty much the final word until someone suggests something else and different testing is done. (i.e. New hypothesis, new testing and observation, etc)
NIST - National Institute of Standards and Time (Kinda like the CDC or NIH, but for things that involve physics, chemistry, or other sciences that don't involve a human body.)
|02-18-2018 04:10 PM|
Originally Posted by Tony P. View Post
|02-18-2018 02:04 PM|
For my part, I use non-ethanol 91 octane fuel with stabilizer and Marvel Mystery Oil (don't know if it helps or not, but I got a 6 pack of the stuff I have to somehow use). I have no fuel shutoff valve on any of my OPE and I don't drain the carbs since I don't know how. No problems yet with neither winter or summer equipment.
HCBPH, my guess about the blue fuel would be that someone used Stabil Marine in it. That stuff is blue.
|02-18-2018 07:59 AM|
I ran into something new last night. I bought a machine for the engine and started tearing it down. It had about a half tank of gas in it, no big deal -right? I usually drain the tank and let it evaporate. Surprise Surprise - the fuel was blue like it had some brand of stabilizer in it. That wasn't the real surprise, there was ice in the tank. Not just a little, a lot. Unless they had water in the gas can, I've never seen anything like that before.
Just a comment.
|02-17-2018 09:53 PM|
Originally Posted by tadawson View Post
i personally spend the bit extra with my carbed engines and get the shell premium fuel which is luckily ethanol free around me. ever since the switch years ago it has saved me the yearly clean the carb out. i know i have even had a few people tell me the 2 stroke oil is suppose to help the fuel stay longer but my 2 strokes still had issues with the ethanol in the fuel.
|02-17-2018 06:42 PM|
Originally Posted by dbert View Post
To my knowledge Acetobacter has not been found inside engines or components and it would be good if someone would dispute that. I'm ready to stand corrected.
I'm not saying ethanol phase separation can't lead to corrosion in small engines; only that that process has nothing to do with bacteria.
Acetobacter is commonly used in fermentation (primarily vinegar) which is a long way from small engines.
|02-17-2018 05:27 PM|
|02-17-2018 04:07 PM|
While ethanol can cause serious problems from phase separation, ethanol-free gasoline can still cause problems due to oxidation, often called stale fuel. Gasoline (with ethanol or ethanol-free) is inherently unstable and that instability causes it to degrade soon after refining. Much of the degradation of gasoline is caused by oxidation. Stale fuel causes gum and varnish - sticky substances that cling to everything causing clogs and eventual failure to the carburetor and engine.
Oxidation has been around for as long as gasoline but is generally not a critical problem in sealed fuel systems, such as vehicles. However, today's small engine fuel systems are not sealed - their gas tanks are vented, as are many gas cans. As a result, oxidation can occur fairly quickly - beginning in as little as 30 days, particularly if the gas tank or can is kept less than half full.
Gasoline additives can control or diminish oxidation, which is why they should be used in all gasolines for small engines.
BTW, I'm not familiar with a NAPA brand additive.
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