Expert: William Hawk Howes - 12/3/2004

Question
How important is it to use the correct oil/gas mixture for 2-cycle engines? I have various tools calling for a 32:1 mixture, 40:1 mixture and 50:1 mixture. Can I just use the 40:1 mixture for all 3? Or, do I need to find space for a couple more gas cans?

Answer
Jacqueline,

Manufacturers of these types of tools take into careful consideration the types of work they are going to do, as well as the make up of the power sources they utilize.
This can entail the load put upon the various components in the engines, as well as the strain in measurement of resistance upon the equipment while doing the work. They take careful consideration on the amount of tolerance and heat build up this work will cause.
Too much oil in the mix can cause additional resistance in the engine, as well as foaming and heat build up.
While too little can result in metal to metal contact. This could (and probably would) cause catastrophic heat failure in the equipment.
In my experience with many golf course turf management operations. Where many different types of air cooled 2 cycle equipment was being used. I have seen some pieces of equipment getting so hot they melted, and some spewing out what looked like brown whipped cream because of incorrect mixes.
Best bet is to follow the Manufacturers recommendations on the particular mixes. They don't want anymore warranty work than they have to have. So they are usually very careful on stating what mixturers are correct.
Contact the manufacturers directly and ask them if you can vary the mix. Probably your best sure bet on an answer that would work for you.
Hope this helps.

Hawk