too much oil in the crankcase is a no- no.
(you are cautioned - to not overfill)

after you change your oil the next time and know the right amount is in
your

crankcase, and the filter has loaded up - regardless of the place it is
parked, if it is

parked there over night each time, take a reading, and you'll know where
the full mark is, (lightly notch it with a file)

and be governed accordingly when - adding oil.

There might be a gasoline additive that will help clean the plugs if it
is given enough hiway driving after use.

mho
vƒe