Yes, you can use 10 W 30 motor oil in a 2003 Mazda Protege. If you live in areas where the temps are very cold, 5 W 30 is recommended.
Where is the thermostat location on mazda protege 2003?
How you replace the cabin filter mazda protege 5 2003
how to replace the thermostat on a 2003 Mazda protege es 2.0
How to know if air sensor not working on protege 2003
How do you replace power steering belt on 2003 Mazda protege ?1.6
where is the starter
no it will not fit.it is not the same lenght and the same height
1964-2003 and after that evolved into the mazda3
help
location cylinder 2 mazda protege
timing belt
195/50/r16