Just picked up a new Sonata. Manual recommends 5W-20, 5W-30 or 10W-30 depending on temps. Any real benefit to a 30wt in this engine over a 20? I live in TN and my only concern is that in the middle of the summer here lately ambient temps have been hovering around 100 degrees. Car sees 90% highway miles and does about 600miles/week.
My planned OCI will be 3750mi per Manual Severe Service Schedule with whatever dino juice is on sale when i go shopping; along with Hyundai OE filter.
My planned OCI will be 3750mi per Manual Severe Service Schedule with whatever dino juice is on sale when i go shopping; along with Hyundai OE filter.