it doesn't matter. I've been incorrectly running 5w30 Mobil 1 because I didn't read the owners manual carefully enough. I'll switch to the recommended 5w20 with the next oil change. For the next 20,000 miles the car will still be under warrantly so I'll use an oci of every 5000. After that, I'll go to probably 7500 mile oci.
I have to admit that even without reading the manual wrong, I probably would have used 5w30 because I bought the thicker is better myth. Because of this forum, I know better now.
I have to admit that even without reading the manual wrong, I probably would have used 5w30 because I bought the thicker is better myth. Because of this forum, I know better now.