Originally Posted by jayjr1105
I'm just curious what's the actual oil spec you're supposed to use in a typical push mower engine. I always thought PCMO wasn't that great for mowers because it holds all the dirt in suspension where a filter would normally clean it out but with no filters on a typical push mower engine, what's the actual proper oil to use?
The owners manual will say, but it's been decades since I've seen any recommendation other than SAE 30 or 10w30 with any PCMO spec newer than about SG.
That said, being in a hotter climate, I run Rotella T6 5w40 in all my OPE, and have for 20 years. That includes 2x 6-ft-lb B&S vertical shaft side-valve engines, a 1970s 5-horse B&S horizontal shaft side-valve tiller engine, a 15-horse circa 1990 Kohler lawn tractor OHV, and a 2014 28-HP B&S v-twin ZTR mower engine that has about 500 hours. Zero issues, zero oil consumption.
I'm just curious what's the actual oil spec you're supposed to use in a typical push mower engine. I always thought PCMO wasn't that great for mowers because it holds all the dirt in suspension where a filter would normally clean it out but with no filters on a typical push mower engine, what's the actual proper oil to use?
The owners manual will say, but it's been decades since I've seen any recommendation other than SAE 30 or 10w30 with any PCMO spec newer than about SG.
That said, being in a hotter climate, I run Rotella T6 5w40 in all my OPE, and have for 20 years. That includes 2x 6-ft-lb B&S vertical shaft side-valve engines, a 1970s 5-horse B&S horizontal shaft side-valve tiller engine, a 15-horse circa 1990 Kohler lawn tractor OHV, and a 2014 28-HP B&S v-twin ZTR mower engine that has about 500 hours. Zero issues, zero oil consumption.