M25XPB, H2O in oil

Status
Not open for further replies.
jlp

jlp

.
Jul 27, 2005
30
Catalina 30mkIII Portland
Did 700hr. oil change in M25 XBP. Oil removed looked as diesel crankcase oil should after 100 hr., oily and black. Changed oil and filter, ran engine for a few minutes to confirm that everything was well. Oil on dipstick looked clean and normal. Came back to boat a few days later to some housekeeping, ran engine for about 15 minuted to charge new battery. Checking oil it now looks milky.

Engine starts and runs well, no smoke/steam in exhaust, coolant looks clean.

So, how did I introduce water in the crankcase? What are the likely points of entry? Any clues/advice appreciated.

Jeff
 
Last edited:
Maine Sail

Maine Sail

.
Feb 6, 1998
11,759
Canadian Sailcraft 36T Casco Bay, ME
Sounds like

Short run condensation. Change the oil just in case and run for a few minutes and check. Then run it long enough under load to burn any condensation off. Running a diesel for short periods is not good for them but it's what we tend to do..
 
Status
Not open for further replies.

Top Bottom