So I picked up a case of 5w30 Formula Shell (Dino) to try in my Toyota 4Runner V6 with around 170,000 miles. I'm just not sure how long to run this oil 5k - 6k? I usually run QSUD or WM ST and change it around 7-8.5k. I bought the Shell for a try my father has used Shell Dino for years and usually gets 200,000+ out of his cars before trade in. Besides it's relatively cheep oil so I figured why not try it.