I chose Seafoam over Stabil. 1 ounce per gallon and I'm done. Had them start 18 months later with this mix using unleaded fuel!
My Bolens HT23 took several cranks to start until I treated it with Seafoam last week. I put about 2 oz in the 5 gallon gas tank, then dribbled Seafoam into the carburetor until I stalled the engine. The neighbors surely thought I was fogging the area for mosquitos due to all the white smoke!! LOL.
I then closed the choke plate and the throttle, and let the engine sit for an hour or so. When I started it up, it burned white smoke for another 15 minutes or so, but now when I crank it, it starts right away without any choke, even on a cool (50 degrees or so) morning.
I'm a believer in the stuff. Gas in Utah is around $3.50 to $3.65 a gallon depending on where you buy it. Seafoam costs about $9.00 a can at Wally World, or about $7.50 a can when bought from a bulk oil distributor... well worth the investment in my opinion.