I'm a part-time farmer with a 35 year old tractor. I intend to change the hydraulic fluid in the tractor (all 22 gallons) and am bombarded with the ad hype of a dozen Universal Trans/ Hydraulic fluids. I have researched and found the Information Sheets for most of the types available here in the USA and they are all very similar. The fluid I need must meet the old International Harvester B-6 Hy-Trans spec, and most of the available fluid labels claim compatibility. I like taking good care of my equipment, but have learned over many years that a high price does not always mean high quality, and to a degree, a moderate price does not always mean significantly lower quality. My local Case/IH dealer wants $8/gal for their Hy-Trans fluid in 5-gallon jugs and considerably less for their bulk fluid... which turns out to be a Citgo product anyway and not "official" Hy-Gard. What's wrong with finding a Universal Hydraulic/Trans fluid at a farm supply store that's on sale for considerably less (about $5.50 gallon), but that meets the B-6 spec? I'm thinking specifically of Tractor Supply's Traveller Premium Universal Trans/Hydraulic fluid. I noted one older test on one of the boards that mentioned John Deere Hy-Gard. My bottom line is always the ratio of dollar vs performance and a 35 year old tractor that gets about 60 hours a year does not need the A-1 best at unlimited cost. Many thanks, gents!