wkearney99
Active Member
- Feb 23, 2006
- 583
- Boat Info
- 47'
- Engines
- Twin Caterpillar C-12, Twin Disc straight shaft inboards.
There are a lot of compounds that get into the oil during regular use. Those can cause corrosion. Leaving those in there for a long storage period isn't the best idea. Better to have fresh oil, free of contaminants, in there coating everything to help guard against the condensation that may occur during day/night temp changes. That moisture will boil off when you start the engine again in the Spring.You want to change the oil to remove the impurities and any moisture in the oil before you store it for the winter.