i had to do a lube service on my three crabbers two of which are diesels. the first one was in my 32 footer. it has 2011 315 hp yanmar 6lpa stzc with 451 hours on it. the oil capcity is 2.7 gallons of 15w40. it has one oil filter which took about an hour. i also did a new gimbol bearing in the transom since i had the drive off. i had to send the drive off to a shop to have a new clutch cone and u joints  installed. the bearing took about 2 hours and then installed the drive and filled it with fluid which took about another 2 hours. then i moved on to my gillnetter which has a 200 hp cummins 4.2 liter which has about 642 hours on it. it has 2.4 gallon capcity and it also takes 15w40 and it has one spin on filter. that took about an hour. also drained and refilled the drive whcih took an hour. i also did an oil change on a chevy 350 in our smaller crabber total time  on that for engine oil and drive oil was 2 hours.
tot hours for job 10 hr.