Hi All, I could use some help with some results of oil samples from a survey. I am very close to buying a 1981 53 Hatteras MY with only 900 hours on the motors (a grocery getter basically). Brief background is that the boat is in amazing condition, got a rave review in the general pre-purchase survey, the owner lives in Asia and has spent 2 weeks aboard per year over the last 12 years and may take her out once or twice during that time. She shows “like new” above and below deck. The boat is professionally managed, upgraded and cared for with calculated maintenance if it was needed or not. I am NEW to diesel motors... The last 12 years I’ve owned a Chris Craft Commander 392 which is gas... I have gotten some of the oil samples back from the lab as part of the due diligence of the purchase. -The starboard motor came back green lights and no issues. -The generator test came back as: SODIUM LEVEL IS HIGH. NO GLYCOL/WATER DETECTED AND MAY BE BURNING OFF IN THE COMBUSTION PROCESS. ALL OTHER ANALYSIS READINGS APPEAR NORMAL. MORE SAMPLE HISTORY NEEDED TO ESTABLISH A NORMAL WEAR TREND. MONITOR FLUID LEVELS/USAGE CHANGE OIL AND FILTER(S) AND RESAMPLE IN 100 HOURS TO MONITOR. My brain thinks this is because the genny is just not run...My experience is that generators need to be used consistently to run clean and run well. -One of the transmission reports came back as: IRON IS ELEVATED AND MAY INDICATE GEAR / BEARING WEAR. ALL OTHER ANALYSIS READINGS APPEAR NORMAL. MORE SAMPLE HISTORY NEEDED TO ESTABLISH A NORMAL WEAR TREND. INSPECT ANY MAGNETIC PLUG(S) FOR DEBRIS. CHANGE OIL AND FILTER(S) AND RESAMPLE IN 10 HOURS TO MONITOR. Here I have no clue what to think, no experience... The mechanic told me that also it’s because the boat is not run. Two more tests will come back this week for the other engine and tranny. Also, I should share that they are Detroits...8V71TI’s with Allison’s. Any thoughts or feedback from any of you more experienced salts? Thank you.