Some people use the after-run oil every day, others don't. Some only use it when storing their engines. Personally, I have never used it but I don't let my engines sit very long and try to run my engines at least once per month. There will be other opinions on this but this is mine.
I gave you the recommended procedure not the one I follow.

As for Crashem, you jumped him a little quick IMHO. I don't remember your previous thread but I do know we have all been getting a little bitter lately(including me at times) and need to lighten up some. This is supposed to be a fun hobby , let's not ruin it here.

BTW- I can't tell what your LHS stocks but a good one should have the oil