Don - One thing else I found when I switched to Mobil 1, was oil leaks developing around intake and valve cover gaskets. I was told the syn oil will seep through sealing areas where mineral oil will not. I believe synthetic is a better oil, but can't afford to change it every 2500 mi. My 2 cents...Joe -- [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.