Vent Leakage

Inspect
1. Fluid level indicator for overfilled system.
2. Fluid color for water or coolant in fluid. Fluid will appear milky.
3. For incorrect fluid level indicator.
4. For plugged or restricted vent.
5. For plugged or restricted drain-back holes.
6. For mispositioned fluid pump-to-case gasket.
7. For porous casting.