Nah, it is some users here, posting above you and me think he knows it all. All this from a 60+ year old that still thinks Amsoil is an additive; but he has a 3 digit IQ. Whatever makes the seniors happy; other then 10% off. :D
RB- you are asking questions that, if you have done UOA in your past know-how and have an understanding these issues with engine, enviroment etc would be not an issue. I asked these very same questions to people years ago and still see people asking them. Not that they are wrong but when people start a debate on this very issue and these come up, not going more into it based on my first sentence here. In fact I have got answers to all these with my past engines testing. Heck, I have seen the data from a few mfg when we selected an engine for the MRAP.
Put it this way, you could not PAY me to use a toyo filter when or if there is a better one like K&N (oil), Mobil & Amsoil EaO. In fact most filters out there are behind the times on filtration. Compare a toyo filter to donaldson it is so far out of wack......