More oil is cheap insurance. I use Walmart house brand (Super-Tech) outboard oil that is TCW-3 rated. It’s usually not on the shelf with the name brand oils, but at the end of the aisle on the bottom shelf – I buy it in gallon jugs. I run my 24 to 1 and 16 to 1 motors at 20 to 1, because it’s convenient to dump a quart of oil into a 5 gallon can of gas and then top off the outboard tanks from that. I run my 50 to 1 motors at 40 to 1, putting a pint of oil into 5 gallons. When I run a motor on a homemade 8 foot hydroplane, since it is revving above max rated RPM, I double the oil.
Dave
