Closed Cooling Advantages?

[HS]

Fresh water use: Looking for opinions on the advantages / disadvantages to a closed cooling system?

And: Would it be worth while to retro-fit (PCM 5.7 343)?

[swc5150]

The block doesn't need to be drained nightly, if you ski late into the fall (or early spring) like we do. Basically an easier winterization process. Also, heater works better with closed cooling, even when you add the Y adapter to a fresh water version. If you run in any salt, it's definitely the way to go.

[RideButter]

Those are great short term advantages.

For long term- The higher and more consistent temperature in an engine, and protection from lake contaminants could potentially add some life expectancy to a motor.

[shag]

I thought higher heat was not the greatest for an engine.... I'm sure though that it helps give more complete combustion in the newer motors.... Just my opinion. I have never had problems (put high hours on boats) with raw water cooling and constant 165-180 temps.... I look at it as the closed cooling system is just another maintenance item.... But in Fla. we don't need to drain the block...

[swc5150]

I thought higher heat was not the greatest for an engine.... I'm sure though that it helps give more complete combustion in the newer motors.... Just my opinion. I have never had problems (put high hours on boats) with raw water cooling and constant 165-180 temps.... I look at it as the closed cooling system is just another maintenance item.... But in Fla. we don't need to drain the block...

I'm jealous... I'll be draining my block tonight after skiing, as we're supposed to 26 degrees tonight.

[gride]

Holy heck. It's been in the 80's for a while here and not below 60 at night. Y'all are troopers up north.

[HS]

Holy heck. It's been in the 80's for a while here and not below 60 at night. Y'all are troopers up north.

The dang weather map says its summer everywhere else in the country, especially south. This morning I could see traces of snow on the "Issaquah Alps".