Oooops, I changed the oil in my 86' LT 230E.  And I used auto 10W30 motor oil.  I haven't started it.  So can I drain it really good and put the correct oil in it and be safe?

If I remember correctly the LT230E is a 4 stroke motor and it has a shared oil sump for the trans & the Motor?

If so You can run shell rotella 15/40 I run this in my yamaha 350 warrior with a shared sump.

If it's separate run the type F or Maxima MTL in the tranny and the 10/30 in the motor.