What ratio of gas mixture 2 cycle oil to a gallon gas

Fuel mixture ratio

Oil Mix Ratio:
Starting in the early to mid 90s Dolmar, Echo, efco, Homelite, Husqvarna, Jonsered, Makita, Oleo-Mac, Red Max, Ryobi, Shindaiwa, Solo, Spear & Jackson, Stihl and Tanaka all started recommending 50:1

• 1 gallon of premium fuel to 2.6 ounces of quality 2-cycle oil or
• 4 liters of premium fuel to 80 milliliters of quality 2-cycle oil.

McCulloch, Poulan & Wen recommend 40:1

• 1 gallon of premium fuel to 3.2 ounces of quality 2-cycle oil or
• 4 liters of premium fuel to 100 milliliters of quality 2-cycle oil.

You should mix 8 Oz. of two cycle oil to one gallon of gas. I put the oil in first and then the gas and it will be mixed and ready to go.

Two cycle engines run on a mixture of gasoline and oil. Each engine type is designed to run on a specific gas-to-oil mix ratio.
IMPORTANT: Use only oil that is labeled for use in "Two-cycle" or "Two-stroke" engines. Home Depot and other stores now have "premixed fuel" of gas and 2 cycle oil.
To mix two-cycle fuel, start by putting correct amount of oil in gas can. Then slowly add correct amount of gasoline. Do not try to mix gas and oil directly in gas tank of equipment.

IMPORTANT: Do not use any fuel that is over 30 days old. Do not mix more fuel than you are likely to use in a month. Old fuel can gum carburetors and prevent starting. Always use fresh fuel.

The chart below shows correct amount of oil per gallon that each mixing ratio requires. Expect that yours will be between 32 gas to1 oil and 50 to 1. 32:1 and 50:1 are most popular.
Ratio GAS:OIL UNITED STATES OIL per 1 U.S. GALLON Gasoline
(128 oz.) *INTERNATIONAL OIL per 1 IMPERIAL GALLON Gasoline
(160 oz.) *INTERNATIONAL OIL per 1 LITER Gasoline
(metric) 32:1 4 oz. 5 oz. 31.25 mL 40:1 3.2 oz. 4 oz. 25 mL 50:1 2.6 oz. 3.2 oz. 20 mL

This small engine needs a 40:1 ratio. Use only 2 cycle oil, not motor oil. If you are mixing one gallon of fuel use 3.2 ounces of the 2 cycle oil. This should give correct mixture so you do not get lots of smoke when you start. Take the time to measure. Note: there should be a marking somewhere on the engine about the mixture.

The gas oil ratio on all Poulan models is 40:1.
First, I recommend a synthetic oil mix if you can find it and also recommend running a 93 octane gasoline.
Second, I would mix no more than 1 gallon at a time, unless you are doing a lot of cutting.
Gas/Oil mixtures do not last that long. I don't give them more than a month, and generally try to run any mixture within 2 weeks.
Think about it, gas cam gum up on it's own when let sitting for too long. Imagine what it can do with oil mixed in it.
Good luck with your saw, and be careful when cutting.

A pint is 16 ounces, add 1/3 ounce of oil for a 48:1 mixture.

Gary

Hi kth culberts...

US gallon Ratio: Ounces of oil per US gallon

50 to 1 mixture...1 pint of 2 cycle oil per 6 gallsons of gasoline..

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Oil Mix Ratio:

Starting in the early to mid 90s Dolmar, Echo, efco, Homelite, Husqvarna, Jonsered, Makita, Oleo-Mac, Red Max, Ryobi, Shindaiwa, Solo, Spear & Jackson, Stihl and Tanaka all started recommending 50:1

• 1 gallon of premium fuel to 2.6 ounces of quality 2-cycle oil or
• 4 liters of premium fuel to 80 milliliters of quality 2-cycle oil.

McCulloch, Poulan & Wen recommend 40:1

• 1 gallon of premium fuel to 3.2 ounces of quality 2-cycle oil or
• 4 liters of premium fuel to 100 milliliters of quality 2-cycle oil.

Chinese chainsaws recommend 25:1.

Hello mcguilmd:

>>All Two Stroke Engines will use a 50 to 1 Ratio using Today's Two Stroke Oils. I once had an Old Chainsaw probably from the 1950s, maybe Earlier 70s that had a sticker on it that said to use a 25 to 1 Fuel/Oil Ratio, but that would have been using Two Stroke Oils of the Time Period the Chainsaw was Manufactured. I was having a Problem with Oil Coming Out of the Muffler and Started Decreasing the Oil in the Gas. I Reduced the Oil Until it was a t a 45:1 Ratio and Decided to be Safe, I would Use a 40:1 Ratio Mix. In that Chainsaw I used 50 to 1 Ratio with no problems. Today's Two Stroke Oils compared to Yesteryears are more Efficient at Lubricating. It is like comparing Today's Synthetic Motor Oil to Motor Oils of Decades ago. All the Equipment I use in Landscaping, anything from a Weed Eater, Leaf Blower, Chainsaw, Hedge Trimmer, use 40 to 1 ratio, and I use all types of makes and models, Stihl, Homelite, Husqvarna, Shindaiwa, and Echo, Sears. I mix up a 5 Gallon Fuel can and use it in all of the Equipment for my Customers and for my Landscaping. I like my Fuel/Oil Ratio a Little Heavy, so I use a 40:1 Ratio. The Following was Copied and Pasted here from and MTD E-mail to me when I Asked for the OEMs Suggested Mixture for this Unit. The mixture, as described by the engine manufacturer, is a 50:1 ratio when using the approved types of 2-cycle engine oils.
50:1 ratio is a mix consisting of 2.5 ounces of 2-cycle oil per 1 gallon of gasoline.
The 2-cycle oil used should be approved and have one or more of the following specification titles: NMMA TC-WII, TC-W3, JASO FB, or JASO FC. NOTE: If unsure of the 2-cycle oil specifications, or the oil is not approved, use a 32:1 fuel to oil ratio. This ratio consists of 4 ounces of oil per one gallon of fuel.
NOTE: Always mix 2-cycle fuel oil and fuel in an approved gasoline safe container prior to filling the engine. Make sure to use a separate gas can for this 2-cycle fuel mixture and label it accordingly. Keep in mind that the fuel capacity of these engines normally is less than a gallon, therefore you will have to use this extra oil mixture for multiple fuel fills. Adding a fuel stabilizer will also help to increase the shelf life of fuel.
>>I Suggest Using a 40:1 Ratio and if Oil Starts Coming Out the Muffler then go to a 50:1 Ratio.
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)