Amsoil makes a special oil four stroke outboards. I’ve been using Amsoil in my Merc Four Stroke since 2002. I really like it and trust it without reservation.
Thanks,I TRUST amsoil products,I have used in my snowmobile. Have you found any place other than a boat dealer to buy filters,I THINK 10.95 IS A LITTLE HIGH
AMS Oil is just plain great stuff. I use the 0W – 40 in my 4 wheeler and my Yamaha 50 4 stroke. I use 5W – 30 in my truck. In all cases, I get better protection and better milage. You can get lower unit lube and bearing grease form them as well.