Ok, so the distributor drama is not completely over. I died at a light yesterday and that dog WILL NOT HUNT! So, I thought, I've run this distributor 19100-61180 for a year and a half without a dedicated ground, which solved my issue last weekend, so maybe I have damaged my Pertronix 1662LS.. So, I start doing a ton of research here on the forum and now I understand something clear as day, that has been asked many times on here. I took a half day off of work, so now I have some wonderful "What have you done to your LandCruiser Today"/Tech to share with everyone. Ok, as clear as I can make it, take a look at this picture:
This Magnetic Ring was installed on the center shaft of my distributor. If you have this magnetic ring, then you DO NOT have 1662LS (black) or 91662LS (red). LS stands for Lobe Sensing; in other words it senses the lobes on the center shaft that originally operated the points, WITHOUT a Magnetic Ring. So WITH this ring it is non-LS and WITHOUT this ring it is LS, no matter which model Pertronix you have: the part numbers in this post are specific to the 19100-61180 Distributor ONLY. In hindsight I am going, "DUH", as many of you are now too. But I'm always learning

. So, what does this mean? In 2019
@ToyotaMatt added this excellent tech to the forum:
Matt's Post. And Lo & Behold, here is mine doing the same thing! :
So now the Air Cleaner stuff is going to have to take a back seat (but thank you to all of you who reached out about the parts I am looking for!), as I have now spent money for a 1662LS. Summit's warehouse is 3 hours from me, so I should have the new parts in by this weekend. But, since I took a half day off work, I'm also changing the oil. I decided to try this stuff:
If I used Over-The-Counter oil, by the time I added the $20 bottle of Zinc additive, this stuff was about the same price. So we will see. Anyway, I hope all this distributor drama is over soon so I can go back to just driving. If the drama continues, I will have points in the distributor and glove box in the near future. Hope you're all doing well, and have a great rest of your day!