MLX10
Newbie
i have a new to me 89 k1500 manual. It's in decent shape I thought.... but the cooling system was a disaster. It thick brown with a lot of sediment. The previous owner did not touch it. The thermostat has been stuck open for god knows how long so it's been running around 100 degrees.
Today I began flushing out the system with water. Drained it, filled it, ran about 10 times. It is finally starting to come out "mostly clear". Now I will be replacing the radiator, hoses, thermostat, and overflow tank.
The problem is I noticed oil in the coolent every time I drained it. A big let down for me. My first thought was obviously the head gasket but there is just a little bit of oil each time. Cracked block? Sure hope not. Then I thought about the engine oil cooler.. could it be something not so serious? What steps should I take to figure out where the oil is coming from????
Today I began flushing out the system with water. Drained it, filled it, ran about 10 times. It is finally starting to come out "mostly clear". Now I will be replacing the radiator, hoses, thermostat, and overflow tank.
The problem is I noticed oil in the coolent every time I drained it. A big let down for me. My first thought was obviously the head gasket but there is just a little bit of oil each time. Cracked block? Sure hope not. Then I thought about the engine oil cooler.. could it be something not so serious? What steps should I take to figure out where the oil is coming from????