I repaired/refurbed a Greenfield Anniversary Ride on for a mate of mine about 12 months ago and it is doing the job of mowing his lawns fine, only downside is the motor is chewing through the oil. Motor runs well, no problems with power, so I'm wondering if it is worth pulling apart to see what is causing it to use this oil. Where is the most likely place this oil is getting past, rings or guides. Both of us have built countless motorcycle engines over the years but he is not that interested in pulling this motor down, he thinks replacing it with a Chinese motor is a better option. I don't want to pull it apart and find it is not worth repairing then have to race out and grab a motor, cause he will then go down the path of "why did you talk me into pulling it down when it was only smokey". The other issue is he lives in a little country town 3 hours drive from my place. Any thoughts