Using 2-cycle gas in a 4-cycle engine in Home Repair & Improvement http://www.dslreports.com/forum/r23308985 en Wed, 10 Feb 2010 08:54:50 EDT Wed, 10 Feb 2010 08:54:50 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23316042 John Galt :
said by tmh :

said by John Galt See Profile :

That's what you get for buying that Toro crap. It just don't last...
It was given to me by an old neighbor who got tired of waiting for it to die...
:D
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The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.
]]> http://www.dslreports.com/forum/remark,23316042 Mon, 09 Nov 2009 17:08:53 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23315348 anon :
said by John Galt See Profile :

That's what you get for buying that Toro crap. It just don't last...
It was given to me by an old neighbor who got tired of waiting for it to die...]]> http://www.dslreports.com/forum/remark,23315348 Mon, 09 Nov 2009 15:09:58 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23312029 John Galt :
said by tmh :

My lawnmower is a 24 year old, 5HP Toro. I keep waiting for that thing to die so I can get a new one, but it always starts on the first pull, even after sitting in the garage all winter.
That's what you get for buying that Toro crap. It just don't last...
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The man who speaks to you of sacrifice is speaking of slaves and masters, and intends to be the master.
]]> http://www.dslreports.com/forum/remark,23312029 Sun, 08 Nov 2009 21:07:10 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23312025 nunya : One instance probably wont hurt anything. I can foul the plug. Repeated use could carbon the CC and ruin the valves.]]> http://www.dslreports.com/forum/remark,23312025 Sun, 08 Nov 2009 21:05:40 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23311740 anon : After running the lawnmower all day, I can say that there's no visible smoke, but the exhaust seems more stinky. Not sure about long term viability, but in a pinch it seems ok.

My lawnmower is a 24 year old, 5HP Toro. I keep waiting for that thing to die so I can get a new one, but it always starts on the first pull, even after sitting in the garage all winter. ]]> http://www.dslreports.com/forum/remark,23311740 Sun, 08 Nov 2009 20:10:40 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23309598 Lurch77 : I agree it is fine for use in a pinch. But I would not run it all the time. Short term issues could be fouling plugs. Long term is sooting, which can cause hot spots and even scoring of the cylinder walls.
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"On a motorcycle, you're penetrating distance right along with the machine. In a car you're just a spectator; the windshield's like a TV." ~ Kenny "Von Dutch" Howard]]> http://www.dslreports.com/forum/remark,23309598 Sun, 08 Nov 2009 10:39:00 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23309591 mocycler : Using 2-cycle gas in a 4-cycle engine is no big deal in a pinch if needed, but if done regularly it will foul the sparkplug and valves as previously mentioned.

If is is a engine with emissions controls you also risk messing up the sensors and sending the computer into a tizzy.

I often get rid of old gas by pouring it a little at a time into my truck. A quart or two diluted into 25+ gallons of good stuff won't hurt anything.

mocycler ]]> http://www.dslreports.com/forum/remark,23309591 Sun, 08 Nov 2009 10:38:14 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23309213 Grumpy : In small quantities, it may not cause problems.

For long term or exclusive use of 2 cycle gas in a 4 cycle engine, I would have to believe you will foul spark plug(s), and very likely gum up the exhaust valve(s). Engines depend upon air in, and air out. A heavily gummed exhaust valve stem will reduce your air out, and may result in the engine running hotter as well.*

Best to use what the engineers call for in the owner's manual, with an eye toward correct octane as well. For instance, late model Stihl brand two cycle oil requires 89 octane (mid grade) gas.

*Call it superstition, but I like to believe it's a good idea to idle an air cooled lawnmower for a minute of three before shut down, to cool it down a bit before the fan stops turning. I could be wrong...]]> http://www.dslreports.com/forum/remark,23309213 Sun, 08 Nov 2009 07:35:37 EDT Re: Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23309109 Hayward : Gas is gas.... 2 cycle only means you mix some oil with it of its is injected on more modern 2 cycle.

OOPS missed... I would think that lawnmower whill no complaining smoked more than normal if premixed.

Better using it up if no real problem than dumping it though.

What is the other device the mix is for.... and again how much does the mower smoke with the 2 cycle mix.
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»haywardm.com (Hayward's Key West)
]]> http://www.dslreports.com/forum/remark,23309109 Sun, 08 Nov 2009 05:39:37 EDT Using 2-cycle gas in a 4-cycle engine http://www.dslreports.com/forum/remark,23308985 anon : I ran out of regular gas for my lawnmower today. Since I was short on time, I grabbed the can with pre-mixed 2-cycle oil in the gas and used it. The lawnmower didn't seem to mind, which made me wonder. Rather than keep two separate cans, can I just run the oil/gas mix in my lawnmower? ]]> http://www.dslreports.com/forum/remark,23308985 Sun, 08 Nov 2009 02:52:18 EDT