It's my first time winterizing a diesel
, and I'm not too sure about what antifreeze
Calder's book recommends propylene glycol as opposed to ethylene glycol, with the former being less toxic and relatively environmentally friendly.
Also, I've read posts in this forum that talk about "RV antifreeze" being used for engine
winterizing (this type of antifreeze
is always propylene glycol because it's meant for RV plumbing
systems). But all the labels on the RV antifreeze jugs I found say it shouldn't be used for internal combustion engines.
I wasn't able to find engine
antifreeze that's made of propylene glycol.
Is RV antifreeze ok for winter lay up, even if the label says it shouldn't be used for that?
I don't think the engine make and model matter much for antifreeze selection, but this is what I have: Yanmar 2GM
, built in 1982.
One last thing: I thought that because I'll use propylene glycol I'd be able to just start the engine in the spring and let the exhaust
system dump the antifreeze in the lake. Well, that's not true. It needs to be properly disposed of, just like any other antifreeze. Which begs the question: why use propylene glycol instead of ethylene glycol then?