Thanks for the advice all you have given me over the last few months. In late Sept. (after filling up) my start cranking time was in the 15 sec time frame. Due to all the great driving weather we have had, I needed gas late December after 175 miles. Remember Diablo's get 9 mpg if your lucky. All of a sudden, my Diablo started right up (3 sec) after the new tank. Thinking this was abnormal, I tried several times later with at least a day separation and she seems to be curred!! Can a tank of bad gas cause my trouble??