Small Engines (Lawn Mowers, etc.): Oil/Gas Mix, synthetic motor oil, two stroke engines


Question
I have a 31cc Ryobi trimmer that accepts different accessories.  I broke the upper drive shaft and will repair in due course.  However, it is several years old and has much time on it.  Therefore, I bought a similar Troy-bilt trimmer to use as primary.  Now,  The Ryobi required 32:1 and the Troy-bilt requires 40:1.  So I don't have to maintain different mixes, can I get by running them both on 1 of the mixes, or did I buy myself a new inventory problem?  Thanks in advance.

Answer
Hello Randy:

All Two Stroke Engines will use a 50 to 1 Ratio using Today's Two Stroke Oils.  I once used an Old Chainsaw probably from the 1960s, 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.  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. Use the 40:1 Ratio in Both Units. If 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. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John