Hmmm ............. where did I knock Brad Penn oil? I wrote something to the tune of " it's a very good oil, unfortunately as soon as I used it, I noticed an increase in engine heat.". If you call that knocking it, I have a totally different opinion of what knocking is.
This being said, I did call Brad Penn in Bedford PA before buying the oil. The reason being that nobody but 1 distributor here in Pittsburgh carries the motorcycle blend and it's far from where I live. Brad Penn told me that as long as I have a bike with the engine separate from the primary, I can use their high performance semi-synthetic 20W-50 oil (previously called Racing) without a problem.
Oh and I also called the only guy who carries their motorcycle blend and guess what? He recommended that I stick to Amsoil. He carries both oils and told me Amsoil is much better. You can call him if you want, he's listed in Brad Penn's dealers directory in Imperial PA. So much for the endorsement! lol
Anyway, read the threads about (excessive) heat and you'll see that one of the most frequent suggestions for reducing it is to switch to synthetic oil. There must be some truth to it, no?
I've been using synthetic oil for years and Amsoil for 12 years now. It's been working great for me and I'll go back to it as soon as I have 1/2 hr to spare to put the bike on the stand and drain the engine.
Not my fault if my engine ran hotter with Brad Penn. I tried it and it didn't work as good as I expected. Better than criticizing it without having tried, no?