Is there any consensus of the best way to break in a new lawn tractor with a 19 horsepower single cylinder B & S engine? Owners manual gives 50 hour intervals on oil and filter with no recommended initial early drain. They also recommend straight 30 weight oil. I was thinking of changing it the first time around 1 or 2 hours and then going to Amsoil's synthetic small engine oil which is a 10w-30/30 with a very low Noack (4.0 I think). Does that sound good? Also, would you need the change the filter the first time? Does anyone have a recommendation on a filter upgrade from the OEM or is OEM the best and safest way to go at least while it's under warranty?