Lubrication Complaints
If the engine oil level is too low, check for the following things:
- External oil leaks
- Worn out piston rings
- Worn out valve guide and/or stem seal
If the oil is contaminated, check for the following things :
- Oil is not changed often enough as recommended
- Faulty cylinder head gasket
- Worn out piston rings
What are the types of lubrication complaints?