Well i had some suggestions in a previous post about my 426 spewing out coolant on trail rides and i thought something was wrong but after doing research on here i used engine ice, new radiator cap and installed a coolant reservoir bottle. i just went riding and i did not have one boil over!!!!!! i dont even need the overflow bottle with engine ice! just wanted to say thanks for all the good tips you guys (and ladies!) post on thumper talk!!!!!!