2018 kia optima ex 2.4
OCI 6mo @ 3571 miles
Out: Kirkland 5w30, OEM blue kia filter
In: M1 EP 10w30, OEM filter
Time not miles is key with this motor. Oil was black and bottom of catch pan was sooty. I used a colored catch pan this time and it was more noticable. I prefer 10w30 in summer, in winter it seems to take longer to warm up for my city driving.
OCI 6mo @ 3571 miles
Out: Kirkland 5w30, OEM blue kia filter
In: M1 EP 10w30, OEM filter
Time not miles is key with this motor. Oil was black and bottom of catch pan was sooty. I used a colored catch pan this time and it was more noticable. I prefer 10w30 in summer, in winter it seems to take longer to warm up for my city driving.