I'm running 10w30 M1 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 M1 10w30 do fine for the 7,000 miles even towing? By the way the truck calls for 5w30 but WM was sold out so M1 5w30 so 10w30 was all that was left so I went with it.