It looks like they were selling garbage "waste" oil and referencing it as suitable for John Deere's obsolete 303 and J20A specs and others. Basically, it's your fault for buying our garbage but thanks for the cash.
The HD Polyurea and Corn Head are probably good candidates. You're dealing with steel on steel so you likely need an EP grease and the dielectric / SuperLube don't fit that description.
For the chuck I often use any EP lithium grease (NLGI 2) that's handy. For the gearbox I try to stock the...
True and I doubt you'll find an accomplished lubrication or power transmission engineer who would agree with his assertions.
Media Influencers will do all sorts of things to engage and manage their audience. An engineer has a professional responsibility and liability.
There are those in the media (like YouTube) that promote this kind of misinformation. Just because someone has "been a technician for ## years" doesn't mean you know what you're saying. Ignorance is the default but talking confidently can help you feel better and is much easier for some...
Pretty much this. You want to get the fluid "cleaned up" in the first years of use and then move toward longer service intervals. I would never trust the initial fill for more than 10K without a test or pulling the pan/magnet for inspection.
I was thinking of the same thing. :D
Oil directly to the tip so the bearing and returning chain receive oil directly. This should be possible with a laminated bar but delaminating and reassembling could be a real trick.
The Pro-Select SDS looks the same as this from Stihl Canada
https://www.for.gov.bc.ca/ftp/TSG/external/!publish/DCR_MSDS/Chainsaw%20Lubricant/Chainsaw%20Lubricant%20Stihl%20Medium.pdf