Online cost of airplane ownership spreadsheet

"Bob Noel" wrote in message
...
In article . net,
"Douglas Olson" wrote:
Don't forget costs of upgrades.

Don't forget cost of oil change every 4 months or 50 hours, whichever
is sooner.

Bob Noel
no one likes an educated mule




Where did you get the 50hr/4 month figure?

I got the 50hr or 4 month recommendation from Exxon for oil change and the
stated reason was that oil has the capibility of suspending some water and
after 4 months it would become saturated and corrosion could then begin. I
recently change the oil in the Helio after five months with infreqent flying
and the oil analysis said "water=0" I am wondering if the four month
recommendation applies as much to airplanes which are hangerd and subject to
minimal temperature variation.

Any other opinions?

Mike
MU-2