oil for troy bilt(bolens)

[travis91]

our troy bilt tractor calls for api service SF rated 30 weight oil. i know the SF class is obsolete but whats the closest we can get for a oil?

[Bearfootfarm]

Maybe this will help
http://www.aa1car.com/library/API_ratings.pdf

[Beeman]

I use 15w-40 Shell Rotella or Mobil Delvac in my small engines. Or I have used Mobil 1 10w-30 synthetic especially in lawn mowers or engines that run long periods of time.

[zant]

I use 10w30 synthetic in all my non-diesel small engines incldg my Troybilt tractor..