I got into an argument with our IH zone manager once upon a time. I was upset about the 706 gasoline engines burning valves. He said , no one else is having problems so you have to be doing something wrong. Not more than a few months later I went to a week service training session at Hickory Hills near Chicago. Several of us mechanics rode together and I had never known any of them before. In the shop talk that came up was, the question was what is IH doing about all the valve burning in the 706 tractors. I said, what, I was told no one else has any problem. To make a long story short, one of the subjects at the training session, you guessed it, short engine life, piston scoring, valve burning , oil consumption and spark plug fouling on 656 & 706 gas tractors. I knew of course it was not only in our area but people like to brush things under the rug. It was not until another year or so after that when IH came with a improved engine overhaul package at a reduced price that included their strong recommendation of using the low ash oil. When you work on forty or fifty different engines on a regular basis it is totally different than having a couple on your farm. Hell, I don't remember dad ever burning a valve on the two H tractors he had either but I sure did a lot of valve jobs on H and M's over the years but it was the 706 that took top honors. People brought them over to me from other areas as well because they were not happy with other dealers work. It is not a myth about as IH never spent a dime on an imagined problem in the 40 years I worked their dealers.
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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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