My mother's 2015 4Runner specifics 0w20, but allows to up a grade for towing. They also allow a 5w20, but it says a 0w20 must be used for the following oil change. Does the higher grade need to be 0w30 or will a 5w30 work? Would a 5w20 work all the time? Point being, they seem to leave a lot up in the air.
With the new oil being somewhat hard to find, I imagine they'll have to throw a 0w20 in there.
Is this oil spec for everything or just cars? I am not sure how the car and truck verbiage compares.