I changed the oil right before winterizing the boat I have heard many opinions on wether or not to change it at the beginning of this season..Idont know what I should do , it seems like a waste to change it before the layup just to change it again when I recomission the boat...Any opinions would be appreciated...
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Oil changes
- Thread starter fotwins94
- Start date
B
blouderback
Guest
Sometimes, a little bit of water or other contaminents can get in the oil, and when it sits for a long time, these things settle out and then become more concentrated in one area of the engine.
It's more the dirt and crap that gets in it over the course of its life that is corrosive than the oil itself. (I think of it as washing your car with the sponge you just dropped in the gutter.) Couple that with the marine environment and I'm reasonably sure some water gets sucked in there in minor quantities. The sitting is what hurts the situation more so than the oil itself. A lot also depends on the age of the oil in the engine itself. For example, I only had 15 hours on the oil when I set up 2 years ago. I didn't bother changing and to the best of my knowledge, caused no harm for last years ops.
ReelyNauti
Member
- Joined
- Oct 28, 2005
- RO Number
- 19411
- Messages
- 9
quote:
Originally posted by mastersp
What makes the used engine oil corrosive? Can anybody shed light on this? I have always changed mine when winterizing but never understood why it became corrosive.
It's from the engine combustion. I think it actually gets acidic.
Even in a new engine there is a level of blow-by introdced to the oil. That's basically spent fuel and air mixture getting past the rings. There are a lot more nasty chemicals in this than just carbon monoxide. Some of them tend to be corrosive.