Engine Coolant Brown and Foamy
Your coolant is brown in color and foamy
Symptom: Engine is using more oil than normal. Coolant appears brownish and foamy. Your car seems to be losing oil someplace, but there aren’t any obvious leaks, and no smoke from the exhaust. You check your coolant and it looks like foamy root beer
1. Blown head gasket.
The Fix: Replace head gasket.
2. Cracked cylinder head.
The Fix: Remove and repair head, or replace cylinder head with new part.
3. Leaking oil-to-water cooler.
The Fix: Repair or replace oil cooler.