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Old 12-06-2013, 04:20 PM
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Quick Winterizing Advice Needed ASAP!

I live in middle tennessee and although we've had several nights below freezing I have yet to winterize my 96 190. All is good because it's in a heated garage. There's an ice storm coming through in about an hour and I have concerns about power loss if lines are down. Here's my question, should I drain the water from the block and manifolds and poor straight antifreeze down the raw water hose till its full. I'm afraid if I go with what I normally use, 50/50 marine, there will still be some water in the block and will dilute the 50/50 mix, rendering it much less effective. Any concerns with using straight antifreeze? I'm planning on going with the Sierra propylene glycol. Thanks in advance.
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Old 12-06-2013, 04:23 PM
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Quote:
Originally Posted by Juiced190 View Post
I live in middle tennessee and although we've had several nights below freezing I have yet to winterize my 96 190. All is good because it's in a heated garage. There's an ice storm coming through in about an hour and I have concerns about power loss if lines are down. Here's my question, should I drain the water from the block and manifolds and poor straight antifreeze down the raw water hose till its full. I'm afraid if I go with what I normally use, 50/50 marine, there will still be some water in the block and will dilute the 50/50 mix, rendering it much less effective. Any concerns with using straight antifreeze? I'm planning on going with the Sierra propylene glycol. Thanks in advance.
If you don't start the motor and warm it up the AF won't get into the block.

You could pull the thermostat but you are still going to need to start the motor to push the AF into the block.

If all you can do is drain that is better then nothing. At least the water that is in the block will be able to expand a bit.
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Last edited by CantRepeat; 12-06-2013 at 08:32 PM. Reason: water vs AF doh!
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Old 12-06-2013, 04:39 PM
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Drain the block - should be ok. My 95 was winterized by dry blocked method for 15 years in Iowa before I got it... should be ok.

Or do what CantRepeat says... pop thermostat house and pour water antifreeze that way.

Plus it take many hours of freezing 16-24 to freeze a block to crack.
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Old 12-06-2013, 04:40 PM
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I'd drain the water from everything, pull the thermostat and fill with RV antifreeze, also fill the lines running to the manifolds, then open the petcocks and make sure the antifreeze comes out
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Old 12-06-2013, 04:46 PM
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Crank the heat in the garage, steal all the wife's coats and pack them in the engine compartment (while discussing with her the definition of sacrifice).

Seriously though, insulating around your engine/block with old rags, blankets etc. may help you out for a short period of time as well. Hope you make it through the storm okay.
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Old 12-06-2013, 04:47 PM
jschildm jschildm is offline
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Drain the water and call it good. Just make sure the flow from the drains is good to ensure that no water is trapped in the block/manifolds.
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Old 12-06-2013, 04:52 PM
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I would drain the block and manifolds, heater and shower if you have them. That should be ok, but if you want to use anti freeze, use the RV stuff. The green stuff is really nasty and you can never get it all the way out. If you get caught with a green slick on your water, you could be in for huge fines and EPA clean up. They really freak anymore.
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Old 12-06-2013, 04:52 PM
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As stated before, drain block (both sides) drain both manifolds.
Remove hoses from seawater pump, remove impeller. Remove both hoses from your trans cooler (the large water hoses!)

If you're still concerned, reinstall everything and remove t-stat and fill with RV antifreeze
Unless it's an LT-1, then use marine antifreeze that's safe for aluminum engines.
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Old 12-06-2013, 04:59 PM
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Personally I dont think a few nights and days with the power off will make it drop below freezing!
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Old 12-06-2013, 05:05 PM
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I agree. You'll be fine. You'll see the power is not even going to go out (that's not a promise).

Quote:
Originally Posted by Aric'sX15 View Post
Personally I dont think a few nights and days with the power off will make it drop below freezing!
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