document.write('<div id="pan_container"><div id="pan_header"><div id="pan_stationAsksImage"></div><div class="pan_pad"><div id="pan_tq"><div id="pan_content_title">Premium versus Regular</div><div id="pan_content_question">What do you think? <br/>  <br/> Is premium a ploy designed to add to Big Oil coffers? Or, do you think it\'s a "must" for all high-compression engines, no matter what we said? <br/>  <br/> Want to chime in with a second opinion on something else we said? (It wouldn\'t be the first time. But you probably already know that.) <br/>  <br/> Tell us what you think -- and thanks for joining the discussion! <br/>  <br/> Tom and Ray</div><a id="pan_replyImage" href=\'http://action.publicbroadcasting.net/cartalk/posts/list/214813.page\' style="display:block;"></a></div></div></div><div id="pan_messages"><div id="pan_commentsTitle"></div><div class="pan_messageContainer"><div  class="pan_messageStats"><div class="pan_pad"><span>Re: Premium versus Regular</span> Added: 08/31/2009 3:46:42 AM</div></div><div class="pan_messageBody"><div class="pan_pad">I have a Mazda Mellia non turbo the filler door says that I should use premium gas the The manual was missing when I purchased the car and have been using regular, am I damaging the engine? the car does not seem to knock </div></div></div><div class="pan_messageContainer"><div  class="pan_messageStats"><div class="pan_pad"><span>Re: Premium versus Regular</span> Added: 07/10/2009 4:36:57 PM</div></div><div class="pan_messageBody"><div class="pan_pad">With our check engine light on (and cruse control disabled as a result, I was forced to go to the dealer, who found an intermintant rear oxygen sensor.  "What gas have yopu been using"  \'Regular\' (it is 85 octane at high altitudes, the manual calls for 87, (regular in the rest of creation)).  "Use mid-grade" (89 octane).  Makes no differance.  The check engine light comes on within 50 miles of resetting the computer.  However, the car\'s computer thinks we are getting better mileage! Time will tell if the 10 cent premium is justified by the incrementally small increase in mileage. But it is annoying to go get my weekly computer reset.</div></div></div><div class="pan_messageContainer"><div  class="pan_messageStats"><div class="pan_pad"><span>Re: Premium versus Regular</span> Added: 07/10/2009 12:22:23 PM</div></div><div class="pan_messageBody"><div class="pan_pad">I had a 2000 Cadillac Deville that "reecommended" 91 octane fuel. It started life as an Alamo rental car, so it had 2 chances of ever having been NEAR the high test fuel pump within the first 20,000 miles before I bought it: 1) fat and 2) slim! Consequently I ran it for the next 100,000 miles on 87 octane, topping it up with premium about once every 20,000 miles or so, out of pity for the pistons and a sense of guilt. I finally filled it from a near empty tank twice in a row with 91 octane gas at about 117,000 miles and it proceeded to blow a headgasket shortly thereafter. Coincidence? I don\'t know, but just maybe all that attention and octane were just too much for it to handle! BTW, I followed all the manufacturers service recommendations faithfully, including oil changes every 3000 miles, right up to the day I traded it for a new car. And all the work was done at the Cadillac dealership where I bought it.</div></div></div></div></div>');