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Diesel coolant

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Topic: Diesel coolant

Posted By: orangereborn
Subject: Diesel coolant
Date 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

Replies:

Posted By: Brian Jasper co. Ia
Date 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.

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"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

Posted By: firebrick43
Date 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.