ajay95 Posted March 1, 2008 Share Posted March 1, 2008 Just picked up a 2005 RX330. Dealer says I should use premium gas, manual says regular is fine. Can you guys give your feedback? Gas is so darn expensive, I don't want waste money if the car does not need premium but don't mind buying it if needed. Thanks Quote Link to comment Share on other sites More sharing options...
Grumpa72 Posted March 2, 2008 Share Posted March 2, 2008 Just picked up a 2005 RX330. Dealer says I should use premium gas, manual says regular is fine.Can you guys give your feedback? Gas is so darn expensive, I don't want waste money if the car does not need premium but don't mind buying it if needed. Thanks I also drive a 2005 330 and I believe that the owner's manual allows fuel with an octane rating down to 89. Check your manual - I would trust that over the dealer. That said, I have used regular 89 octane after the first 1000 miles. The car runs like a top! Most new cars have a knock sensor that slightly detunes the engine in the event that knocking occurs. I have never hear any knocking; never noticed any reduced performance; never had any ill effects from regular. I believe that one of the main reasons that premium is suggested is during the horsepower wars used during ad campaigns. If I were to take a trip to Colorado or Montana I would use premium. Gary Quote Link to comment Share on other sites More sharing options...
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