New to the forum here. Last year I bought a used 743B to help out while building my new house. Knock on wood so far so good with the machine! Great to have around the house even though the construction is now done. Just got done buying a attachment plate for a plow which should be handy for the new drive. The machine is enclosed with heat and stereo. Makes plowing or moving snow nice! I'll be changing the oil here soon and was just curious what weight oil others run in there machines that live in the northern part of the states. I live in southeastern Wisconsin. Thanks in advance!