Does the lexus RX 450h require premium unleaded? I have an ES-350 now and use regular

Asked by Nov 24, 2013 at 11:29 AM about the 2010 Lexus RX 450h Base

Question type: Maintenance & Repair

2 Answers

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http://www.edmunds.com/lexus/rx-450h/2010/features-specs.html? style=101162469 -- this states premium required.

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My lexus rx400h does not require premium. If you use regular you might get 1/2 to a mile per gallon less . You would not notice any difference in performance or hurt your engine.I heard that you can have your timing retard, but I am not sure that it makes any difference. Did you notice that the gas stations have quietly conspired and raised the price of premium by 40 cents a gallon? I did not in the begining.. They always challenge your intelligence and observation capacity.

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