This past weekend, it was 7* in my area. While I was working, I forgot to have some one plug my truck in. Long story short, I'm pretty sure I blew a freeze plug on the passenger side (right above the starter) and either the oil cooler is now leaking, or another freeze plug in that area. I looked under the oil cap, and of course it's milky. With that, I decided to go ahead and replace the passenger side freeze plug, and replace gaskets and I rings on the oil cooler. Also do a complete oil change and replace all the coolant. Is there anything else I need to check?
Im figuring it's the oil cooler because while it's running, I can see coolant dripping from the oil filter.

 

hopefully you didn't do more damage than that


Coolant pressure test should be done once you repair cooler and freeze plugs

 

Will do. After removing the front tires, driver side leak looks to be coming from the area around the motor mount. I can see coolant following the seam between the oil pan and block. It's dry in front of the motor mount and wet after. Guess I really won't know anything until I pull the cooler.

 

Did you not have enough antifreeze?

 

^^^^ Good question. For the future, the block heater is the WRONG way to deal with this. If your coolant froze at +7F, it was too weak, even too weak for boil-over protection.

 

With all the cavatation issues etc you let your coolant be in such poor condition that it froze at7?!!