The 4 mix motors are solid. I use the whole system at work and it’s great
It’s more important to use there synthetic oil for the piston pin since there’s no needle bearing and carbon on the valvesYes I agree about the motor - I have a 4 mix engine in a Stihl HL 100 hedge trimmer and I like the engine.
It starts and runs better than the two stroke Stihl trimmer, blower or pole saw I have used for many years, but only time will tell if it will last?
I have read elsewhere how it's important to use their brand synthetic mix oil to keep the valve(s?) working properly.
We will see about that.