I know this might be sacrilegious to some, but a buddy of mine gave me a quart of BMW 5W-30 Full Synthetic oil. Can I use this in my Honda lawnmower with the GCV160 engine? I am almost out of oil for it. I currently use Supertech 10W-30 full synthetic, and the owner's manual said I can use either 5W or 10W.
Thanks.
Thanks.