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Engine Coolant for CAT Diesel
Posted 07 November 2012 - 02:33 PM
Posted 07 November 2012 - 04:46 PM
The engine manufacturer (Caterpillar in this case) only gives the specs that the coolant must meet. And the specs are the same for Cat, Cummins, etc.
The chassis maker chooses the coolant for initial fill.
But, at 10 years old, if you don't know for a FACT that the coolant has been changed AND exactly what coolant it is, indeed change it now.
BTW, what Caterpillar engine do you have-- I didn't know the Zanzabar came with a 370 HP. If a 3126, it could be a 330 HP/860 lb-ft torque.
Dianne and Brett Wolfe
1997 Safari Sahara 3540
Moderator, FMCA.com Forums
Chairman, FMCA Technical Advisory Committee
Member, FMCA Long-Range and Development Committee 2007-2009
Moderator, http://www.dieselrvclub.org/(FMCA chapter)
Posted 07 November 2012 - 07:26 PM
That said, since the motorhome is new to you and older I would change all the fluids as soon as you get time/money for it. That way you can start your own time line for testing/replacing on a regular basis.
When you do the antifreeze consider replacing (or at least evaluating closely) the hoses it runs through (especially those in the engine compartment subject to heat). My coach was a bit older when I bought it and those hoses were pretty darn soft.
Also, when the antifreeze is changed have the thermostat (CAT calls it a regulator) replaced as well. CAT's motorhome help line told me that the thermostat should be changed every three years.
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