Originally Posted by rreyn1812
Talked to my local Stihl technician today about these caps again and he related something new that I had not heard before. The caps have been redesigned because of ethanol and it's effect on the plastic the caps were originally made from. According to him, the plastic would swell and create the problems of just getting the caps off the equipment (my experience exactly). The new caps are supposed to solve the problem.
My dealer tried the same B.S. excuse on me too. In Maryland we didn't have ethanol in the gas when I was having this problem with my BR600. We were using MTBE as an oxygenate instead. They are 2 completely different compounds.