Gentlemen any recommendations on type of lubricant to use i.e Evinrude, Quicksilver, Tech from Wal-Mart and also what viscosity is recommended Evinrude XP150 1990. Thanks Steve
I'd stay away from any Mercury gear oil product which says "Premium" lower unit oil. Stick with the "high performance" in Quicksilver or Mercury brand. Bombardier also makes a superior gear oil product: HPF XR. You've got an expensive lower unit-don't skimp on the grade of oil.