Cleaning Procedure
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Do not use a caustic solution to clean the aluminum engine block.
NOTE:
When cleaning the engine block in a thermal type oven, do not exceed 232°C (450°F).
Clean the following components:
- Remove all sludge, dirt, or debris using a cleaning solvent or thermal type oven. Refer to Cleanliness and Care .
- Gasket surfaces
Refer to Replacing Engine Gaskets .
- Coolant passages
- Oil galleries
- Main bearing caps
- Cylinder head bolt holes to remove threadlocking material