Posted by Majorman on April 28, 2023 at 09:23:08 from (86.134.80.163):
In Reply to: Re: Power Major oils posted by sotxbill on April 28, 2023 at 07:47:13:
I have no answer. I went to my oil supplier and told him what I was using in my tractors, 15/40W. He suggested I change to 20/50W HD as it was closer in additives to the oils that were specified for the tractors I have. It worked. The higher viscosity is probably the answer.
I had reconditioned one engine with all new seals, rings, crank and bearings, bores and pistons were within original specifications (no sludge found in engine after 50 years of regular oil and filter change) and was asking for advice on the best oil as my usual supplier of Castrol oil had changed the additive package to include anti wear additives for wet brakes. As I am sure you know, if an engine is not worked, these can cause glazing of the bores, and my tractors are not worked hard. Also, too high a detergent package in the oil can affect the build up of a carbon seal, leading to slobber.
I am reporting my experience, not trying to start an argument. I have serviced Ford and Fordson diesel engines for many years now and saw what happened when Ford changed the specified oil in the '000nd series at their introduction in 1964. At the time the oil specified was not readily available and those engines gummed up and rings stuck in a short while using the same HD oil that worked in the earlier engine. Once HDD (Series 3) oil was used our problems stopped.
I am all for modern oils in modern engines and transmissions, as recommended by the manufacturer, but the OP is asking about a tractor that I have had many years experience with both old and new, I own two of my own. I use the nearest thing I can get, today, to the recommended oil.
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