Helping a neighbor, who was given a five digit SN REMINGTON 742.

What lube is best for the gas system, dry like a M14/M1A or light dab of "never-seize"?

Clean the gas tube/ port with pipe cleaner with hoppe's or old "shooter's choice"???

What else to inform my neighbor? He will use OTC ammo, no reloads.

Thanks.
JHR