75hp optimax merc service

I'm new to this. What oil do you guys run in the opti? How often do I need to clean/replace the fuel filter? How often do I need to replace lower end oil? 2007 model lowe stinger, 75hp mercury opti.

Bought this boat couple months ago, I've put 80 hours on my electeocnos, I assume around 40ish on the motor. Thanks in advance!

Electronics***

Fuel filter changes as often as needed (especially with today's [censored] gas)...lower unit oil annually when you change the water pump impeller.....Penzoil synthetic blend in the oil tank. Also make sure to use a fuel stabilizer to help the above mentioned gas not turn bad as quick.

As for the hours.....highly unlikely that you are actually running the motor 50% of the time that the electronics are being used. In an 8 hour day of using the graphs, I might use the big motor for 15-30 minutes. More time if I'm idling through a stump field, and less time if I'm just moving from a spot to a spot.

Everything annually.

Is the fuel filter cleanable or replace?