Re: Rotella oil

Posted by the tractor vet on August 15, 2023 at 17:39:40 from (108.220.145.239):

In Reply to: Re: Rotella oil posted by Fritz Maurer on August 15, 2023 at 14:32:18:

Well if ya look back and been around engines then you would know that the old G M Detroit's needed LOW ASH and the oil of choice was for around here it was Delo 100 a low ash , and I H put out a TSB on the tractors such as the 460-560 gas that to sovle the exhaust vale burning that was caused by ash deposits to run the low ash they came out with . . Ford super duty truck engines even with the sodium fill valves had issues as i sure did a ton of valve jobs on them while i worked for Ford Ya never lived till ya have to pull heads out of and N series off a 477 or 534 . BY YOURSELF about one a week . Now as to the Farmall tractors we USE to have a bunch of gassers around here and yup we did a ton of valve jobs to the point that i kept on stock Exhaust valves , a dozen at a time and 6 intakes , along with guides m, springs new keepers . To go along with the valve machine we had a head grinder that paid for it's self . BUT if ya used the low ash in them ya did not burn exhaust valves . Buy getting the guys to switch over to the LOW ASH i shot myself in the foot as now the valve jobs stopped coming in . I had two that were hard headed about it and i would see hem a couple times a year with a burnt valve or two. They asked me one day how many exhaust valves i have burnt on my 706 gas and i said NONE and i said i ran the low ash after talking to a guy i meet at a sale who was and old I H dealer as we got talking about the valve burning and Bill explained it to me So i switched but before i switched i burnt three valves after Non and no other work was done to the engine . My last hard headed customer with a 460 gas that was bought new just around the corner from me back in 59 by his dad as there first new tractor and is still on the same farm before i started doing there work that tractor ate a couple valves a year from day one and Old Jim would not change oil or fuel brands as he ran nothing but Sohio products , When he semi retired his boy started coming to us and his first time was for a valve job that he needed done NOW and the dealer could not get him in for two weeks . I told him get it over to the shop and i'll get you out in around four to six hours TODAY . And he stayed and watched , i did the valve job and refaced the head and he was gone in a little over five hours done deal and he got thru spring planting . He had just got started on picking corn with a 2 row mounted when it dinned on another Exhaust valve and with out taking the picker off and in the field we pulled the head run it to the shop and stuffed in two exhaust valves and had it back picking in 6 and a half hours . With him it took four more times before he switched oil and that was back maybe 18-20 years back now and the 460 is still going just not doing as much .

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