Engine Performance problem
2002 Other Daihatsu Models Front Wheel Drive Manual 120000 miles
my engine oil left 50% after 3000km driven, and had burning smear. My engine recommended 10w-30 but I used 5w-20. Can it be due to that?
I having excellent performance with 5w-20, if I go back to 10w-30, my car is no as powerful.
my question is can 5w-20 damage my car engine, what if I change my oil every 3000km?
can I still used this type of engine oil?