I bought a different motor for my boat and it didn't work out for me. I gave it back to the guy I bought it from but in the new (used) motor had the oil injection removed so I had to mix my oil in my gas. Now I have 145 gallons of mixed gas. When he put my motor back on he unhooked my oil injection.This motor is 13 years old. Should I leave it like it is or hook my oil injection back up? He said due to it's age it might be a good idea to leave it unhooked.What do yall think?