Looking ahead at what oil to use in my hydro system for my new Scag. The manual says to use 20w50w motor oil but is not specific about Dino or synthetic. I am going to use a synthetic as I think it takes the heat better and would just be better in the hydro system. The book calls for 20w50w but mobil1 does not make that weight so I was thinking Valvoline synthetic since I like their oil. Anybody using it?
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