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 - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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