chast
Marlton, NJ
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Joined: 12/05/2004
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Hi all--thinking it is about time to change out the DexCool in my '96 7.4 Vortec. Remember reading somewhere about DexCool not liking air or air exposure? Any advise or recommendations about changing the old coolant with a new batch of DexCool? Thanks in advance, as always for your input.
[email]chartrue2@aol.com
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KOG
Winterville GA
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Joined: 01/31/2001
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Don't use Dexcool for replacement. Use one of the "all makes, all models" gold/yellow coolants instead. Drain all of the Dexcool (block drains also) flush and refill with new stuff using distilled water for the mix. Change all hoses and thermostat while you're at it. If your coach has heater lines to the water heater or a rear heater change those too.
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MudChucker
Winnipeg Manitoba
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Joined: 03/07/2008
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I have just spent a fair bit of time confirming this as Im going to be doing this in my 6.0L vortec... you will want to use Prestone Longlife, (not prestone longlife dexcool)
2006 Springdale 292BHLS
2007 GMC Sierra 2500HD SLT 6.0
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FEDowner
Simi Valley Ca.
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Joined: 11/08/2005
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Also put in a tube of Aluma-Seal. You can get it at any parts store.
'06 Damon Challenger, Nostalgia Dragster & 28ft trailer,
Calpurnia (born 12-20-06)daughter of Traiano & Jasmine,
At the Rainbow Bridge Sonia 8-30-06 our 1st Neopolitan Mastiff
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cdzranch
Snowflake Az
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Joined: 03/28/2008
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Looks like "Abandon Ship on the Dexcool!" but no one says why!
Dan and Cindy FMCA# 402249
2002 Itaska Suncruiser 37ft (1) slide W22 Workhorse chassis; 1990 Komfort Trendsetter 25ft 454 4bbl carb
Tow VW manx bug; '07 Honda Shadow 750
Snowflake Az.
"If you don't learn something new every day, you've wasted that day!"
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MudChucker
Winnipeg Manitoba
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why you ask ?
well, its like this... it eats the gaskets out of your engine..
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Adam H
People's Republic of California
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Joined: 02/12/2007
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It eats EVERYTHING not just gaskets. Worst coolant ever made. Make sure you flush that stuff out good.
Adam
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jbman
New Boston,Michigan
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Joined: 11/11/2005
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Whats the best way to flush the coolant, have a V-10 2001
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MudChucker
Winnipeg Manitoba
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the best way would be to use demineralized water to flush through the engine till it was all gone... I have to use bottled water to fill my radiators as my well water will calcify in the engine...so I will drain the rad and reservoir, dump in a jug of bottled water till its full again, run the engine for a minute, and repeat this 2 more times... then I'll dump in a bottle of water wetter and fill with 2 bottles of concentrated 2 gallons of bottled water and the rest will be premix... as 2 gallon jugs of concentrated is all that was on the shelf at the parts store...
PS: yes the water wetter works... in our ATV's its the difference of being towed home when our rads are caked full of mud or riding for the rest of the day...I use 1 bottle in my engines and they never "heat up" when Im sitting in traffic...
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kahoona
Marathon, Conch Republic
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Joined: 09/27/2007
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jbman wrote:Whats the best way to flush the coolant, have a V-10 2001
You are scaring me jbman... why the 2001 V10. I have one.
Kahoona
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