2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

[Pas Bon]

Well at the 200 hour mark I decided to check out a few things getting ready for summer activities, so I check the oil and yep it's VERY HIGH! first time I'v had this issue in the 12 or so years I've had the boat. So I pull the thermostat and sure enough STUCK OPEN.

Is it everyone's consensus that this will cause and engine to "Make Oil"?

 

[ondarvr]

Re: 2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

Yes

 

[Pas Bon]

Re: 2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

Also and I doubt it but I'll ask anyway...is it better to replace with a hotter thermostat? I think OEM is 50C but there may be a 60C option I could go with????

 

[boscoe99]

Re: 2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

Yes, a thermostat stuck open will contribute to the making oil issue.

If you troll a lot, idle a bit, run in cold waters, etc. it can be desirable to install the 60 degree thermostat.

 

[Pas Bon]

Re: 2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

Thanks, being in Southern Louisiana the water is usually quite warm, however that last big trip I made, and when I suspect most of the "oil was made" was on the MS river in January and the water was VERY COLD! I have ordered the 50C thermostat, the first one worked for me since it was new so why mess up a good thing right.

 

[Pas Bon]

Re: 2002 F115 (200 hours) Making oil (STUCK OPEN THERMOSTAT?)

I dropped the oil yesterday...looked pretty bad, I'm concerned it may have had a little water in it as well!