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Harry Ferguson Tractors Discussion Forum
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Food for thought!

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Newbie To TO35

01-22-2005 08:34:59




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Well being a mechanic and having rebuilt many engines over the years I have seen the effects of mineral oil causing slug and carbon build up and I have to side with the “Don’t Do That” philosophy. Switching to detergent oil in an engine that has run mineral oil for years will break down carbon deposits. Now the problem isn’t so much in clogging your oil system though in a real extreme case I wouldn’t rule that out. It has to do more with the detergent breaking the carbon deposits down into small particles and suspending them in the oil. Carbon being one of the hardest elements will case abnormal ware to bearing surfaces and engine components. The worse I have seen was severe ware in Main and Rod bearings resulting in low oil pressure along with cylinder wall scoring. It's as bad as having sand in your oil. This carbon does it damage as it breaks down and goes through the oil system and eventually gets picked up in the filter but with an almost endless supply of carbon build up continuously breaking down in the detergent oil the damage can be severe. Now that doesn’t mean that every engine run on mineral oil will have a bad carbon problem, if the owner routinely changed the oil and filter there shouldn’t be a problem and switching over would be fine. My problem is I don’t know this tractors history so I think I will play it safe and run the straight weight mineral oil for now. In the spring I will drop the oil pan and inspect the crankcase, if the back of the pistons are reasonably free of carbon deposits I’ll go ahead and switch it over. If not I will have to some up the situation and decide on a course of action to get it cleaned out. A mixture of Multi Weight Oil, Marvels Magic Mystery Oil and a little Kerosene has work well for me in the past though it is expensive changing the oil and filter every 10-20 hours until it is cleaned out but a rebuild and the time to do it costs more.

By the way I am a newbie to these tractors but have been a mechanic for 22 years now and make living as an Aircraft Mechanic. I do enjoy these discussions, they make you think and I always learn something new.

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aussie_tea20

04-04-2005 19:41:50




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 Re: Food for thought! in reply to Newbie To TO35, 01-22-2005 08:34:59  
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