Mercury 300xs Oil Injection System Question

[Pachanga_rick]

Ok, I'm so used to pre-mixxing my oil this system has me 2nd guessing myself.. question is

I primed the system as the manual says - Turn on the key, pump throttle forward 3 times and allow system to prime.

No problem, sucker drank down almost 1/2 the oil tank on the engine..and called it a night as the bugs were biting.

This morning I noticed this oil line running into the oil injection pump looks clean and dry, like not oil was pumped to the injector pump.

Should this line show oil? (Clear line with white breading)