I need to change the coolant in my 1963 D7E that has the D339 4 cylinder engine. The more I read about the different types of coolant the more confused I get. I need something that prevents cavitation and protects down to the low teens fahrenheit. I'd like to have something that I can just add distilled water to and call it a day. Recommendations?
Me I was all time using standar coolant PRESTONE in my dozers D7
I have a follow up question relating to this. On some of the forums relating to newer tractors and diesels, knowledgeable people insist that the type of coolant used is critical. They say cavitation of the coolant next to the liners can greatly shorten the engine lifetime. Many engines had filters for adding SCA additives to the coolant. So at what point is this critical? I'm assuming older diesels like ours should not need anything more than standard green coolant. But do more modern CATs require different coolants? What is in the engine design changes that makes old coolants insufficient? I'm just curious about all this, since I grew up on all older machinery, where we would just back up to the fuel oil tank to refill, and things like that. Certainly no one ever worried about using anything other than Prestone or similar.
Back in the earlier days of trucking, we used Nalcool and Nalprep in our cooling systems to keep them up. Some trucks had a precharged coolant filter (with additive) Not sure if available for new engines.
I stick with green in the old engines here. The newer stuff with blue silicone hoses will keep getting the pre-mixed red. Tailseat15 Steve made some comment about mixing the types will harden the hoses?
I've been topping up with the regular green Prestone automotive coolant mixed with distilled water but was worried about cavitation. Is cavitation not a problem with these old engines?
Look up cavitation then Cavitation in Caterpillar Diesel Engines - Google.com
cavitation in caterpillar diesel engines - Google Search
If "we" can believe AI - there is an explanation that does make some sense. Might help clear up the confusion. CTS
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