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Improving Fuel Economy as per Lexus

Created September 12, 2005, at 10:26 pm by Anonymous

http://www.lexus.com/assets/models/hybrid/pdfs/driving_performance_guide.pdf
Lexus suggests using premium fuel vs. regular. Does this in fact improve mileage? If you calculate the increased cost per gallon and it improves over 2 mpg it is worth it, but does it really improve mpg? Ironically, they suggest driving without roof racks which are std on their RX400h. Any thoughts?
If one doesn't have a long stretch of road how can you use cruise control? Thoughts?

Rosanne Wells

Junior Member

3 years ago

Does using premium fuel really matter? What is performance and how is it based. Please advise

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