I use to run the oil exclusively for years with great results. I only stopped because the shops in West Michigan stopped stocking it. My guess is that the regional distributor must be a pain to deal with. I switched over to BelRay H1r, but for me, it's very smoky oil that leaves a lot of tail pipe debris.
Now I'm going to buy a case of PJ1 Silverfire (Smokeless) and I'll be all set for next year. Really guys, this is a very good oil. Try it, you will not be disappointed.