Are you changing your oil too many times ?

On our race bikes, I changed the oil after every 2 rides. I also put in a new spark plug after the practice on race day.

Never had an engine failure. Never fouled out at the beginning of a race.

For our seasonal cars which do not get heavy miles, I too only change oil / filter in the spring.

For the car that my wife puts crazy kms on, we change every 6K kms..

For my truck and son's beater, twice a year..spring and fall..