Replace the PCV Valve.
A 2001 Mazda Protege uses standard 10w-30 motor oil. This provides a good balance of viscosity and protection for the engine.
For my Mazda I use 10w-30
Oil Pan.
yes all cars do .
10w30
For a 2002 Mazda Protege 5, the recommended oil is a 10w 30. 5w30 is recommended in temps below 30 degrees f.
Look at the rear or side of the oil pan
A 2001 Mazda Protege will hold approximately 4.5 quarts of oil. The recommended oil type is 10 W 30. This oil can be purchased at any auto parts store.
The starter, on a 1994 Mazda Protege, is located on the driver's side of the engine. It is just behind and to the right of the oil fill cap.
I am sure it is 3.9L
5W-30.