Our vehicle's odometer was reading it's max at 299,999 when the engine blew a few days ago. Last year it got a new transmission and now I am buying it a brand new OEM/warrantied engine. It also has had just about every important part replaced in it the past few years. I would want if buying this vehicle to know how many new miles were on the engine. It won't keep track otherwise. So I agree with making note of the changes to everything and setting back to zero. Just wanted to know how the law requires it be done?