Of course Max, I had a brain fade, so obvious, I had seen those but never gave them any thought. Back to my Stihl chainsaw, I was looking at it and it has a label on it saying 40:1 fuel mix, never noticed it before. I bought it new in 1984 and I have always run it on 25:1 using engine oil of whatever I had in the shed at the time and when I had a think about it I have never had the spark plug out of it. From memory when I bought it, it cost me 2 weeks wages at the time.
