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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8909
Experience:  I am ASE Master Truck Certified.
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I have 2005 Frightliner Columbia C13 cat and I coolant leak

Customer Question

I have 2005 Frightliner Columbia C13 cat and I coolant leak couldn't find with pressure and there is thick white grease thing coming from breather hose
JA: What is the complete model and serial number of your machine?
Customer: Don't know
JA: Are you fixing this yourself? What have you tried so far?
Customer: My mechanic pressure checked could find and we opened the head cover there is white thick grease inside too
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Every 3 weeks I put a gallon of antifreeze. What causes that thick white grease to come from breather and where that antifreeze could go
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 10 months ago.
Thanks for asking your question. I will try and help you out.
The thick white grease you are seeing is what antifreeze and oil look like mixed. I see this a lot.
You coolant is going into your crankcase.
To find where it's coming from. I like to drop the oil pan and pressurize the cooling system. It could be coming from the water pump, head gasket, or a cylinder liner.Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 10 months ago.
Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.