Regular unleaded pump gas is fine. 87 octane.
Ethanol free if you want to be real proper about it... But newer engines are designed to handle a small amount of ethanol better than they used to be.
In all likelihood, if you do find ethanol free gas, you won't find it below 90 octane.
It could be a regional thing. By my dad's in Minnesota 89 and 91 are offered as non-oxygenated (ethanol free), here in Nebraska it could be 87, 89, or 91.Odd.
The ethanol free around here is 87 octane.
It could be a regional thing. By my dad's in Minnesota 89 and 91 are offered as non-oxygenated (ethanol free), here in Nebraska it could be 87, 89, or 91.
For a stock GX160, what fuel should I use? What octane rating?
Non-oxygenated is usually considered for motorcycles, boats, classic cars, small gas engines. Of course being that it's the People's Republic of California we're talking about here...I have no idea if their laws pretain to those classifications or not.And here in CA, all on-highway gasoline has to be oxygenated with 10% ethanol by law.
http://lmgtfy.com/?q=honda+gx160+owners+manual
If you're going to put additives in the gas, get one that actually does something useful like Sta-Bil. Not Lucas, not Marvel Mystery Oil, not STP, and certainly not Sea Foam.
Sea Foam is nothing but oil, naptha, and rubbing alcohol. That's straight from their original safety datasheet. They got sneaky on the newer one and now call the oil/naptha a "hydrocarbon blend" and "trade secret."
You really don't need any additives unless the engine is going to be stored for months with fuel in it. In that case a fuel preservative and draining the carb before storage will go a long way.