Posted by Crazy Horse on February 12, 2018 at 07:22:01 from (75.159.240.214):
In Reply to: Re: Zinc Additives posted by dhermesc on February 12, 2018 at 06:11:08:
I agree and I think a lot of old tractor owners get in a knot about something that is not an issue. This Wiki info says sometime in the 40's when they showed up ......
"Zinc dialkyldithiophosphates (often referred to as ZDDP) are a family of coordination compounds developed in the 1940s that feature zinc bound to the anion of a dialkyldithiophosphoric acid (e.g. ammonium diethyl dithiophosphate).[1] These uncharged compounds are not salts. They are soluble in nonpolar solvents, and the longer chain derivatives easily dissolve in mineral and synthetic oils used as lubricants. They come under CAS number 68649-42-3. In aftermarket oil additives, the percentage of ZDDP ranges approximately between 2-15%.[2] Zinc dithiophosphates have many names including ZDDP, ZnDTP, and ZDP."
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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