Help Deciphering Oil Sample Results

[down2earthlandscaper]

Sea trial went well Survey came back really well on this 2001 Sea Ray 245 Weekender. The only thing is that the oil sample results came back and I don’t really know if they are satisfactory.
I’ll try to post screenshots of the results.

 

[ttmott]

Nothing here to be concerned about. I've never seen this style of presentation. It appears this is more about trending than a one-off analysis. The dilution could be cold starting and running the engines cold.
The skew is it's unknown how many hours on the oil and the type / weight of the oil. If the oil was changed last week then I'd be more concerned than if it was changed 100 hours ago.

 

[down2earthlandscaper]

Nothing here to be concerned about. I've never seen this style of presentation. It appears this is more about trending than a one-off analysis. The dilution could be cold starting and running the engines cold.
The skew is it's unknown how many hours on the oil and the type / weight of the oil. If the oil was changed last week then I'd be more concerned than if it was changed 100 hours ago.

Thanks for the reply. It does seem that this test is more about trending... oil was changed in summer of 2023 and the boat gets used pretty often but it would be hard to confirm hours since the oil was changed. Oh, the type of oil was unknown to the tester, so apparently that's why they state "different viscosity than label"

As far as the 6 plotted graphs on the last pic: does those levels seem within reason?

If so, everything else on sea trial and inspection looks really good - all systems are operable and I can tell that the owner really takes good care of it.

 

[dtfeld]

Unfortunately 1 oil analysis, cant really tell you very much as the disclaimer says, unless there is something catastrophic going on. Sure looks like a CAT SOS test.

 

[down2earthlandscaper]

Unfortunately 1 oil analysis, cant really tell you very much as the disclaimer says, unless there is something catastrophic going on. Sure looks like a CAT SOS test.

Anything catastrophic is basically what I was looking for on the oil results.
On the sea trial, the boat ran like a dream. The surveyor tested temps after being at different RPM levels and WOT. Readings were great. Oil pressure and voltages steady.
Not mechanically related, but it has a new full sunbrella canvas top and Makrolon front, rear, and side panels. Surveyor said that whole enclosure is probably worth $9K on its own.
I really like the owner too. You can tell he takes great care of his boat. He has WiFi enabled thermostats and humidity monitors in cabin and engine compartment. Bilge heater. Dehumidifier in cabin.

 

[dtfeld]

Sounds like a great boat. If you buy it, keep doing the oil analysis and you develop a good tool for yourself or a future owner