need to know how to change seals

[slaviks]

both my seals leeking rear main seal and front main seal need to know how to change them shop charging 900bucks do it my self just need to know how to change them and how much they cost and also need to know how to tell why i have white smoke coming frome my exhuast pipes all the time

[MaximA32]

The easiest way is to pull the motor.