Running less oil is more about concern for the water
were you run you motors and protecting the opportunity
to run them. It only takes a small government like a
home owners association to control your access to water.
There are already lakes out west that don’t allow two
cycle motors anymore. Putting a large oil slick on the
water or running a smoky motor can get the attention
of the wrong people. Manufactures were
recommending the reduction in the amount of oil to
run with the introduction of an oil made specially to be
mixed with gasoline. (TCW) It important to be
comfortable with the amount of oil your running because
your not going to have a fun day if you think you could be
hurting you motor. This is some of the factory oil
recommendations put out in the early 70’s. You may find
this helpful in deciding what is the right amount of oil for you.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.