My truck is a '03. I bought it April of '09 with 53,xxx miles on the clock. It had been sitting on the dealer's lot for over a year when I bought it. I don't have good records of the maintenance that was done on it before I got it. I've now got 61,xxx on it. I was thinking I should flush out the cooling system and fill with new stuff. I visited my local truck service center and talked to one of the mechanics. He said I could flush it out and just use whatever coolant I want in it. I hate dexcool since GM has had millions of problems with it. Figured I'd go with Prestone green stuff. But then I looked on the Caterpillar web site and they show two different kinds of coolant there. Anybody have any ideas whats the best?
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'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio
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