First 562XP ran fine out of the box, after a few days had trouble starting when warm.
Problem kept getting worse so I returned for another 562XP
Second 562XP had same problem immediately. Thought maybe I had bad gas, bought more gas, mixed another tank. Saw ran great!
Problem solved? No, after a week the new saw was running as badly as the first.
So I mixed a new tank of the SAME gas but with a DIFFERENT 2-stroke oil. Now the saw runs fine.
The oil I was having problems with was called "Pro Mix". Shop Pro Mix 16oz. 2-Cycle Lubricant at Lowes.com
Now I am using Stihl (just because I had some, will switch to Husq next). We'll see over time if the saw continues to run OK then I can be confident that my problem was just the oil this whole time.
It appears that the "Pro Mix" runs fine when the tank has just been mixed, but after a few days it somehow degrades the fuel, as if there is some slow chemical reaction occurring in the mixed tank. I think it is possible that this product has a different composition from other oils because it is marketed as having the unique property that you can run any engine with it at a 50:1 ratio. I didn't buy it for that reason, I only bought it because I like the metered dispenser bottle.
Would be interested in anyone's thoughts as to how different 2-stroke oils might differ?
Problem kept getting worse so I returned for another 562XP
Second 562XP had same problem immediately. Thought maybe I had bad gas, bought more gas, mixed another tank. Saw ran great!
Problem solved? No, after a week the new saw was running as badly as the first.
So I mixed a new tank of the SAME gas but with a DIFFERENT 2-stroke oil. Now the saw runs fine.
The oil I was having problems with was called "Pro Mix". Shop Pro Mix 16oz. 2-Cycle Lubricant at Lowes.com
Now I am using Stihl (just because I had some, will switch to Husq next). We'll see over time if the saw continues to run OK then I can be confident that my problem was just the oil this whole time.
It appears that the "Pro Mix" runs fine when the tank has just been mixed, but after a few days it somehow degrades the fuel, as if there is some slow chemical reaction occurring in the mixed tank. I think it is possible that this product has a different composition from other oils because it is marketed as having the unique property that you can run any engine with it at a 50:1 ratio. I didn't buy it for that reason, I only bought it because I like the metered dispenser bottle.
Would be interested in anyone's thoughts as to how different 2-stroke oils might differ?