Originally Posted By: 2012AccentSE
Not exclusively, but I've been using it in my mom's 07 Optima for 3k OCI's. She doesn't like the idea of going over that lol. I think I used it for about 5 oci's in a row? Nothing abnormal. Good, basic synthetic. At 145k miles, that engine is spotless...
I'm sure Walmart's dino would also keep your engine spotless with 3K OCI's....5K is the minimum I'd go on a full synthetic....