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Diesel coolant
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orangereborn View Drop Down
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Joined: 12 Sep 2009
Location: NW WI
Points: 1451 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangereborn Quote  Post ReplyReply Direct Link To This Post Topic: Diesel coolant
    Posted: 05 Oct 2010 at 11:46am
What is the lastest in diesel coolants?  GM dealer said to use Dexcool in my Duramax and I thought that was over-ruled already.  Green with SCA treatment or something like Cat EC-1?
 
Thanks
 
Dale
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Brian Jasper co. Ia View Drop Down
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Joined: 11 Sep 2009
Location: Prairie City Ia
Points: 10508 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian Jasper co. Ia Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2010 at 12:50pm
The Duramax has always had Dexcool from day 1. I see no reason to change now. I've never heard of a failure related to coolant other than simple neglect.
"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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firebrick43 View Drop Down
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Joined: 10 Dec 2009
Location: Warren County
Points: 592 		Post Options Post Options   Thanks (0) Thanks(0)   Quote firebrick43 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2010 at 10:36am
The Cat extended coolant is some really great stuff(shameless plug)

But I would stick with the dexcool if that is what you got.  Get some test strips and measure the ph from time to time and add sca's every 3 years and your good.  Every coolant, needs SCA s after 3 years. 

If you do think about switching to another style, don't just drain it, flush it and flush it good with water.  I have seen some nasty stuff happen which I really don't understand mixing different types of antifreeze. 
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