lawn mower oil question

[BlazerCat777]

As long as you use small engine oil you're fine. I'm sure there's alot of people that say normal oil is fine and it may be but why chance it? Small engine oil has added Zinc for your internal parts, better wear resistance. Also unlike normal car oil/ diesel oil, small engine oil is designed for air cooled engines operating at 450 degrees or more. Car oil is designed for liquid cooled engines with operating Temps closer to 200-250.

[Grumpy/LGF]

Been using straight 30wt for 45 years , just got a new mower last year same 30 wt as I been using no issues

[bassfisher444]

As long as you use small engine oil you're fine. I'm sure there's alot of people that say normal oil is fine and it may be but why chance it? Small engine oil has added Zinc for your internal parts, better wear resistance. Also unlike normal car oil/ diesel oil, small engine oil is designed for air cooled engines operating at 450 degrees or more. Car oil is designed for liquid cooled engines with operating Temps closer to 200-250.

Oil in the crankcase of an air cooled engine doesn't run much hotter than in a liquid cooled engine that is being worked hard.