I was checking my records and came to realize I hadn't changed my dino oil in like 5800 miles , is this too long and will it have hurt anything ? Changed it today with Kendall semi synthetic with a pure one filter from advance auto because the semi synthetic was cheaper than all the other regular dino oils like havoline , penzoil , valvoline etc by 50 cents a quart minumium. Like 2.98 a quart for the Kendall. Is Kendall an ok oil , did a search but did not see too many comments on it .