how critical is it to run motor for 8hours before putting into service also nervous over oil injection i am running mixed and also injection for break in period should i keep doing this for awhile i installed a new crank gear ran all the air out its smokes alittle seems like it should smoke alot more being double mixed the oil is dropping in the tank but very slowly i dont want to wreck this rebuild its very expensive i bought the boat with bad motor and rebuilt it it a 19ft 1989 grumman i paid 800.00 for it is that a good price
