I'm running Mobil 1 10w30 in my 2012 4.0 V6 Nissan Pathfinder I usually change it out at around 7,000 miles to keep the warranty happy. I plan to be towing my 5,000 lb travel trailer for prob a total of 3,000 miles this summer so should I shorten my OCI or would the Mobil 1 10w30 do fine for the 7,000 miles even towing? By the way the truck calls for 5w30 but WM was sold out so Mobil 1 5w30 so 10w30 was all that was left so I went with it.