guys, i found why im loosing coolant, my rad. cap was bad and a friend gave me a new rad. cap. and problem was gone., but my original cap has has 140 labeled in the top and my friend gave me 200, he said its psi... never knew that our rad caps has psi's labeled on them i thought they where just caps. My question is is it ok for me to use the 200psi cap that my friend gave me or should i buy the 140 ones? tnx in advance