Seems most manufactures if not all seem to be recomending synthetic oil for snow blowers.Briggs states for there motors 1 0z per cylinder per hour under full throttle is exceptable oil use.I would think they would have done a fair amount of testing with regular and synthetic oil before comeing up with that oil use spec. As long as the oil use is at or in my case less than the 1 oz per hour i am comfortable with it.Really the only reason I posted this thread was to inform people that may be searching on the net what can be normal oil use in there snow blower.Also to note in my case the 3 Tecumseh engines i have would have been well broken in before going to a synthetic oil.
Honda simply recommends: "Use a 4-stroke automotive detergent oil
[...]
Honda recommends that you use API SERVICE category SJ or later (or equivalent) oil"
I suspect most of the discussion of synthetic advantages revolve around the theoretical advantages of synthetic especially in OPE. I don't believe OPE engines are in any sort of high-stress environment (although I'm sure people can come up with exceptions) and in fact, I'll bet if you left most snowblower oil in the crankcase for 3-4 years at a time, it wouldn't make a lick of difference for snowblower longevity compared to more obvious forms of abuse like "leaving the snowblower outside year round under a cover" or "leaving gas in the snowblower and not starting it for 2-3 years".
There are a couple of guys here who rebuild snowblowers (like trout and borat). I wonder if engine wear is the reason most snowblowers are abandoned? Or is it "won't start" or "belts are broken" or "rusted to h*ll"?
That's not to say this isn't an interesting or useful discussion, but I think we need to keep it in perspective of what these engines are and how they're used.
This message was modified Jan 18, 2011 by tkrotchko