Originally Posted by fastfreddie5409
What type of antifreeze do you guys recommend? I've heard about CAT! What are your thoughts?
There are many modern Heavy Duty Extended Life Coolants specifically designed for diesels. Delo ELC, Rotella ELC, International's Fleetrite ELC, CAT ELC, Mobil 1 ELC, and a host of others. They will address diesel cavitatation, provide superior metal corrosion protection, provide better heat transfer, require no testing and maintenance, be free of harmful abrasive silicates, borates, and phosphates, and have an operating life up to 1 million miles (Delo ELC). In fact International, who made your engine, recommends and factory-fills with these Heavy Duty Extended Life Coolants (Fleetrite ELC/Shell Rotella ELC). And in fact almost all heavy duty diesel manufacturers use Heavy Duty ELC's meeting the most strict requirements in the industry...Caterpillar's EC-1 Rated coolant but what ever you get it must be a concentrate NOT a 50/50 mix, takes 3 1/2 gallons.