why is it that my 92 cu inch 04 vegas took 6 qts of oil. My 06 100 cu inch kp took 4.5 qts and my current 08 106 cu inch vision takes 5 qts. I was just reading the mobil 1 thread and this just got me to wondering. Couldnt help but wonder why they didnt stick with 6 qts if it would cool and lube better. I am no mechanic or oil guru by any stretch so please be gentle if you think this is a stupid topic. Thanks.