I never tried this on a car engine but it works good on motorcycle engines ( H.D's1929 and before I.O.E engine's) after you disassemble the motor is to take out the top motor mount stud and pump grease into it, it will push the piston out,works the same as getting the pilot bushing out off the flywheel just more grease. I also have to agree with Dandy Dave about the mouse **** as I have beat piston's out with a block only to have it break up