Hi Scurvy Dog,
Although I just recently contracted with a Carver 466MY. With that said, I own a construction company with heavy Equiptment. So although not a marine mechanic or professional deisel mechanic, I have spent countless hour with and under deisel engines.
I understand some views. Some difficult to change. People never seeing what happens in the engine or keep diligent care of there stuff (boat maintenance). With that said a perfect example was I never used deisel “Heat”, an additive to stop deisel file from thickening from the cold. I normally added about 50% kerosene to stop freezing. None the less water and debris aredeisel fuels worst enemy. So this year my lines froze anyway. Nor I will use the additive.
So two trains of thought. A full tank at the end of season will minimize the amount of water condensation in the tank - the other is do not fill tanks when you store so when you add fuel during use you mix a large percent of grease fuel.
Now. Water is the worst enemy. Fuel can draw water considerably more than gasoline, from the atmosphere. Hence a full tank less air to draw water. Or full tank can have more affected fuel.
What the problem is - deisel can have bacteria grow in the fuel clogging filters and injectors. More so the fuel will separate. Thick layer on bottom and a thinner on top.
That’s the skinny. So
Old school/ new school?
So is your fuel dependable? Is it humid and condensation prone?
Here is a link to explain all the additional issues
I’d rather have a clogged injector than get stuck, poor starts, smoke and buildup in valves and piston heads.
Look at this.link
http://www.fuelsystemguide.com/what-is- ... treatment/