depending on how long the oil has been in the moho, i would change it to an inexpensive 10-40, install a new filter and run it a few thousand miles. the capacity depends on which oil pan your engine has and which filter you install. it is usually between 4-8 quarts. check how much you drain.
then change the oil to AMSOIL synthetic and add a 1 quart or 2 quart oil filter from OEMY or NAPA.
replace the transmission, anti freeze, and power steering fluid with AMSOIL synthetic. i am using a k&n gauze panel air filter.
replace your brake fluid. i am using castrol dot 4 lma fluid. it took 9 12 oz cans to get clean fluid out of all my calipers.
do not drink the water from your tank.
turn off the water heater. turn off the drinking water filter if you have one. replace the filter element if you have a filter.
install approx. .26 oz of bleach for each gallon of water capacity and fill the tank. run water through all lines and hot and cold faucets and let the mixture soak for at least an hour, the longer the better.
after chlorination, drain the tank and water heater and refill it at least twice. run the hot and cold faucets each time to flush the chlorine out.
you should chlorinate the tank about once a year.
some folks add baking soda to the tank after chlorination to get rid of the chlorine taste and odor.
vinegar will also sanitize the water tank. i used 6 gal of vinegar in my 80 gallon water tank, soak time at least 4 hours. this cleaned my water tank quantity sensors. i drained and flushed my tank once.
this will get you started...
then you have the appliances... :
i have a '66 BSA 441, '79 CX500, '84 700 nighthawk, and '89 YAMAHA TW 200.
