Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 213Get this manual
OIL INJECTION
Remote Oil Hose Connections
CONNECTING OIL HOSE WITH BLUE STRIPE
1Remove shipping cap from fitting and connect oil hose (a)Fasten hose with sta-strap
aOil Hose with Blue Stripe
CONNECTING OIL HOSE WITHOUT BLUE STRIPE