Geez, Darryl, sorry to set you off like that, but while I happen to agree with you that the stainless mesh filter is the best approach, and that Scotts is the best available example of those, and that good maintenance is of paramount importance, your post(s) contained 3 common misconceptions.
1) Good oil maintenance will prolong valve life (inferred by your indirect support of derwud2's assertions) Simply not correct, as pointed out.
I was speaking of the valve buckets and cams, which is the last item to get oil and is one of the easiest ways to check for proper maint. Cam cover vs. pulling the top end.
2) Cam lobe/lifter wear balances valve face/seat wear. This is only wrong if you're talking about Ti valve engines. But even if you're talking about the older models with OEM SS valves, the reason they appear to balance is in reality due to the fact that the valves and seats wear so marvelously slowly; the cam and lifters just don't really wear that much unless the oil is left in the engine too long. In the later ones it's not unusual to be able to go through 3 sets of valves, even as long as that takes with a YZF, and still have almost no wear detectable at the lifter or lobe as long as the oil is properly maintained.
I've never had to deal with TI valves so I'm not sure of their wear characteristics, I would hope that they would wear more slowly as long as properly maintained.
3) If the oil looks clean, it is clean. There isn't any way to support that one. Oil that looks clean can contain fairly high levels of a variety of contaminants including metal debris that are invisible to the unaided eye. Also invisible is the condition of the oil's viscosity, which in a multi-grade oil could be significantly sheared down. Now, I'm sorry that my use of the phrase, "you don't know what you're talking about" struck you in such a personal way, but it wasn't meant to. It's just a fact. Without an analysis to positively determine the condition of your used oil, you just really cannot know what it is by looking.
I'm sorry if I over simplified the fact, but you can't argue with the fact that a quality oil filter
, the use of high quality oil and frequent changing will help prolong engine life and that was all I was trying to convey.
Nothing personal. But allowing such misinformation to be taken as fact may lead someone to make a decision based on it that he might regret later.
As far as taking it personally, it goes back to not knowing what each other really knows and possible poor wording, it's not hard to push people's buttons.
It's Christmas Eve, I'm off work until the 3rd, I'm gonna get a chance to ride, so. I tried to bow out gracefully once, I will try again.
Merry Christmas all.