Sure it is only 10% because 90% of people are cheap.
Example, look at Wal-mart. You do not see expensive items in there. Look at the people shopping there. I am not knocking the store but if you want real electronics, car parts, etc you do not shop there. You go to stores that know there stuff and sell real products.
Again, you get what you pay for. Why do you think most people buy MTD for a lawn mower and not JD? This is the same thing as years ago (not to long ago) most trucks needed to drain the rear diffs. Now some are fill for 100K or for life. Again things change that is what people do..or most.
Well, example here, I can do 2 filters and 6 qts and go 1-year or 15K at about $40. If you do your short drains with 5 filters and change every 3K it would be around $52.5 (filters are $4 Each and oil at $1.3 qt). You are paying more, more time, more used oil, etc
I will say your oil at 3 or 5K miles will protect less using dino and the properties of the dino will be far less then most group 4 or group 5 synthetics. The price is less in the long run using a true synthetic as I have done Post some oil results with 3 or 5K on gas engines? At any time a synthetic will have better #'s since the way it was designed. A dino is not even close to it. No matter at 3K or 10K.
I bet the TBN is almost zero and you Ph, Ca are below 600ppm. You are draining while I am doing some none-oil related., but if you like doing that......
Sure you never had them brake down since you are always working on oil changes so often. I am at the same place but have taken less time for oil changes, used oil, etc. Why do something in 8 steps if 4 is quicker and provides the same outcome with hindering anything?
Again this goes back to my, as you say, "Not an apples to apples comparison". It is the year 2004 not 1984.
It is like someone picking a college. Do you want some state run college or Yale...Again both colleges but you get what you pay for.