Wayne,

Oil analysis could be useful in your situation if based upon intervals based
upon days.

Many dealers offer the service locally. Cat & Cummins come to mind but I'm
sure DDA and others do it as well. If interested contact a dealer and see
if they will recommend a program for your engines. Probably won't save you
much $$ but may provide some peace of mind and save you some unecessary
work.

Merry Christmas!

Butch
"Wayne.B" wrote in message
...
On Fri, 22 Dec 2006 15:06:18 GMT, "Butch Davis"
wrote:

A point of interest is that the oil on the larger diesels is usually
changed
based upon the recommendation of the oil analysis lab. Most engine oil is
changed much more often than nesessary if based upon a set number of
hours,
miles or days.

That makes a lot of sense for engines that are running nearly
continuously. It only takes 4 days to get to 100 hours in that kind
of service. There are times when I will do 100 hours in a week, and
others when I won't do that in 6 months.