I found this in the Jiffy Ice Auger FAQ. I wonder why you can't use a synthetic oil in their augers. Does it actually provide less lubrication?

"What kind of oil should be used to make a Jiffy fuel mixture? Use only quality two-cycle oil to mix with clean fresh gasoline for fuel. A quality two-cycle snowmobile oil works well.

Do NOT use synthetic oils of any kind, they will void the warranty."

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http://www.jiffy-on-ice.com/faq.htm

 

The reason is becase some synthetics are not to be mixed with fuels,They are ok for injected sytems ,All reguler 2 stroke oils can be mixed with fuels with no problem,so other than listing the types of oil you can /cant use they just tell you to run regular 2 stroke oil.
Yes synthetics are a far better oil,