how can i improve the fuel economy omy 2003 lexus rx300. i've seen forums where owners "modify" the horsepower or reprogram shift points.

Asked by horseshoe601 Aug 13, 2012 at 01:22 AM about the 2003 Lexus RX 300 AWD

Question type: Maintenance & Repair

how can i improve the fuel economy on my 2003 lexus rx300.  I am getting 22 - 23 mph on non crowded flat
roadways.  Otherwise 16 - 17 mph.   i've seen forums where owners "modify" the horsepower or reprogram shift
points.  I have tires inflated to 32psi and use full synthentic oil and have frequent front end alignments.  I try to
drive with ecomony in mind.  Had all transmission fluid changed at 95000 miles.  Car runs like a dream
otherwise.  Any recommendations?

2 Answers
20

thinq4yourself answered 11 years ago

A tune-up, oil and gas treatment, fuel system check and flush, drive slower. I like to use Sea Foam and drive slower.

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90

Sherrie answered 6 years ago

Try putting a fuel attive in every other full tank gas or every full tank of gas will help engine and gas milage

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