It works best when the engine is warm. Just thought I would add my 2 cents. I will try to post a pic of the connecting rod I pulled from an engine this past weekend. It is bent into a u-shape and twisted. This was from letting water (too much)get into the motor. The carnage we saw that day when we tore the engine apart was terrible. Even the cam was broken in 2 places. I know its kinda off-topic, but oh well....
