Hey, Dick,

I'm a newbie/wannabe to this airplane biz, but I have a lot of experience
operating and maintaining a full-displacement, diesel powered tugboat.

My view: oil is cheaper than engines. My engine manufacturer, Cummins
Diesel, recommends changing oil at 500 hour intervals, in continuous-duty
(i.e., truck) applications. I change every 200, because we run the boat
only intermittently, and the capacity is three GALLONS. I can buy the oil
at Costco at a pretty good price, and don't object to the expense.

I suggest--urge--you to economize some other way.

Blue skies to you,

Dick Behan


"Dick" wrote in message
news:rqawg.1329$K94.452@trnddc01...
Having always changed the aeroshell 100 sae50 change in my c85 every 25
hours, I'm considering extending the aeroshell duration to maybe 35 hours.

My flights are in Florida and usually around an hour (or sometimes two)
and am currently burning/losing up to 1/2 quart per hour when filled to
3-1/4 quart line on the dipstick.

Of course I'm thinking about oil cost and feel like adding that oil each
flight hour does help it's cleanliness and service life.

Comments (be gentle G)?

Thanks, Dick