Ask A Mechanic: Sept. 8, 2006 (The Car Connection)

Ask A Mechanic: Sept. 8, 2006 Saving gas money, the new oil rules, and Jeep chatter. by Bob Weber (2006-09-08) BobWeber2 '); More mechanical wisdom from Bob Weber Saving gas money Q--Recently I purchased a 2003 Corvette (350 V-8) with 13,000 miles. The owner's manual recommends using 91 or 93 octane gas. It states that 87 will cause poor acceleration. Should I use 93 at all times, or alternate gasoline grades at interval fill-ups? Will prolonged use of a lower-grade gasoline damage the engine? ...