Hope this helps.
- You'll be changing either oil long before it's "worn out" simply to get rid of the water that gets trapped in the cases.
- Modern motor oils are doped with so many refinements that the difference gap is narrowing.
- Synthetic will have a slight edge at start-up. If your mower is a lifetime purchase, then synthetic will probably pay off. If you regularly trade in every X number of years then maybe not.
- Last time I was ay Wally World, the difference in price for 5 gallons of car oil was $1 !!
Synthetic oils have nothing to do with thinness. That is viscosity which changes with temperature. Yes he is clueless.Okay, I guess I got my answer and the only reason I posted the question was because one of my friends was claiming that synthetic oils were generally thinner and shouldn’t be used in small engines. Obviously he’s clueless! Thanks