Oil in my Coolant
MtnMikes42
Jeeper
- Posts
- 14
- Thanks
- 0
- Location
- Union City, CA
- Vehicle(s)
- 1980 CJ5 4.2L T4 Dana300 D30 4.88 ARB Rear AMC 20 4.88 sold axles
Hi All,
I have seen heads crack or warp, resulting in coolant in the engine oil. This is the expected error since usually the coolant pressure is higher than the oil pressure, as far as I know.
My 1980 CJ5 AMC 258 i6 / 4.2l with Howell TBI now has engine oil in the coolant. After a 3 hour drive, I parked the Jeep getting ready to go 4 wheeling. I noticed black stuff coming out of the coolant overflow from the radiator, since I do not have a coolant collection bottle.
When I touched it, I realize it is more oil then coolant.
This jeep sat around for about 6 years without being driven before I bought it and started restoring it. It has a new radiator, water pump, thermostat etc.
I guess the starting point is to take off the head and send it to a machine shop for testing. Any other suggestions?
I have seen heads crack or warp, resulting in coolant in the engine oil. This is the expected error since usually the coolant pressure is higher than the oil pressure, as far as I know.
My 1980 CJ5 AMC 258 i6 / 4.2l with Howell TBI now has engine oil in the coolant. After a 3 hour drive, I parked the Jeep getting ready to go 4 wheeling. I noticed black stuff coming out of the coolant overflow from the radiator, since I do not have a coolant collection bottle.
When I touched it, I realize it is more oil then coolant.
This jeep sat around for about 6 years without being driven before I bought it and started restoring it. It has a new radiator, water pump, thermostat etc.
I guess the starting point is to take off the head and send it to a machine shop for testing. Any other suggestions?