I have always used straight 30 weight oil in my Kaisers for the last 20 years. No problems. If you can find Type A fluid anymore you are very lucky, last time I saw it was in the early 90's. Dextron/Mercon is virtually identical. I have used it in hydromatic no problem. 80/90 weight is gear oil usually comes in plastic bottles at you local parts store, is used in standard and overdrive transmission as well as the rear end. I am using Valvoline now in my 51 Kaiser, no problems. Brake fluid Prestone Dot 3 is the best I am using it now in my Kaiser, no problems. Brakes stop on a dime and do not lock up. DO NOT use silicone based fluid on Kaisers, it will eat the rubber in your lines and cylinders causing brake failure. Gasoline, I have always used 87 octane regular with the occasional dose of Marvel Mystery Oil, no problems. You can waste your money on hardened valve seats if you want to, but think about it, that is a cast iron block, the same stuff they made Battle Ships out of, do you think modern gasoline is going to hurt it? The lead additive in older gasoline was a lubricant, that is all. 3 in 1 oil found in every wal mart on the planet is used to lubricate the bearings/bushings on the starter and generator. A few drops every 1000 miles or so is all you need. Any type of grease can be used to pack wheel bearings and lubricate steering linkage. I hope this answers a few questions.
