I change my engine and primary every 2500 miles. Synethetic in the transmission, so every 5000 miles. The biggest thing i'm told is to change the oil before you store it for the winter. Clean oil prevents condensation from being a factor.[/QU
"Clean oil prevents condensation from being a factor". How about educating an old dumbass. What's in the used oil that collects water that's not in the new oil. Carbon? Reason I'm asking is I start the spring off with new oil.