When it comes to oil, I use the oil my handbook recommends. GM recommends 5w30 full synthetic in my 2018. GM recommends 5w30 conventional oil in my 2005 and 2007. Kubota gave me a quart of oil for my 2019. I think it was conventional 10w30 oil. Not 100%. It is sitting on the shelf next to the tractor. I'll have to look. Someone said it was Valvoline oil.
I can't say I've ever had an engine fail because of oil.
I don't overthink oils. Just use what your handbook says.
One time I put an additive in my car. The additive screwed up the O2 sensor. The new O2 sensor said don't use additives..
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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