DEAC vs ELC coolants.

[bigdog]

Went to the Cat dealer and bought coolant for the Tradewinds and told him that I had ELC.I needed some before we went to Vegas in Nov,so mixed it with distilled water and put it in.Got home and needed to add about a full gallon after 4K miles,so mixed the rest and put that in and before I threw the jug away,I noticed that it said DEAC CAT coolant. Is this the same as ELC or did I just containminate my ELC coolant????

[Vintage]

Mixing Cat ELC with other antifreeze/coolants While Cat ELC is compatible with conventional antifreeze/coolants, we recommend you do not mix the two. Cat ELC is ethylene-glycol based for anti-boil and freeze protection, but its corrosion chemical system is different than that of conventional antifreeze/coolants. If they are mixed, don't add more than 10% of the conventional coolant. If you exceed 10%, treat the system as if it contains conventional coolant or drain and flush the system and refill with ELC.Found information that says don't mix ELC with more than 10% of another coolant.

[Cat]

Deac is a diesel engine coolant. But it is not ELC. If you have added more than 10% of the volume of your cooling system with a non ELC then you have lost the ELC qualities. bummer

[bigdog]

Bummer,I guess that's what you get when you trust that you're getting the right thing from the parts guy at the Cat dealer. I specifically asked for the ELC and thought that's what he gave me.. Dummy,I really should have checked on it before I added it. Now I guess I'd best go out and check what size system I have.If it's over 20 gallons,I'm ok.