Ya know TOM when you have spent as much time as i have working on tractors and a bunch of them Gas tractors . Then you just might know somethiing . Also if the OLD M has flat tops and distliate head maybe it just might run sop so Bt when ya start putting step head pistons in them and god only knows how many times .020 has been shaved off the head the 87 just don't cut it . And if 40 buck more per 200 gallon is going to send you into bankruptcy Then ya might want to start selling off a few . Or put your old lady to work .as we have been having problems since last year with the Four S/MTA's that are still earning a living everyday and one 400 with a 450 kit in it , When they start to work they will do the same as the 6 cylinders do . They will start to loose power knock back fire and die , put the 93 in them and they will work all day and never miss a lick . So don't go trying to tell me what works and that ya don't need this or that . IF the tractor is going to just drive on and off the trailer at the shows then on run what ever ya want but for the guys that want to try and make them do what they were made for then a littel better gas sure will held them do it . Also keep in mind her that the rebuild kits ya get today do not have the FROGED pistons that use to come in a rebuild kit and the cheap cast pistons can not dissipate the heat to the skirts as fast and they will swell a bunch . Also when was the last time that you had a long talk with a chem. eng. about the fuels of today and what should be run in a working engine ?? We have the Paper work from said chat that shows the BURN curve between the 87 and the 93 . And the difference in the heat made by the 87 compared to the 93 . The 87 is a HOT short burn and the 93 is a longer cooler burn and gives a broader power curve .
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Today's Featured Article - Ford N-Series Transmission/Hydraulic Fluid - The Full Story - by Llamas. The transmission fluid in an “N”:-series tractor lubricates the transmission, differential, rear wheel bearings, PTO and hydraulic pump drive, and it also cats as the working fluid for the hydraulic lift. In 9N/2N models, it also lubricates the steering sector and shaft system. The owner’s manual for the 9N and 2N models specified the use of only two fluids. They were STRAIGHT MINERAL OIL SAE 90 (above freezing) and
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