meyertek Posted August 4, 2004 Share Posted August 4, 2004 Hello everyone - I'm new to the Owners Club, longtime Lexus owner just got a 2001 GS430. Used to have a 2000 GS400. I remember getting better gas mileage in the 2000 and on average am getting 17 around town... I know this may be about average but with Gas prices so high (am my lead foot) I would LOVE to find a solution or additive to help boost fuel economy. Please let me know if anyone has had luck with any devices or fuel additives in their cars. Thanks so much! -MJM Daytona Beach, FL Quote Link to comment Share on other sites More sharing options...
SUPRAboy80 Posted August 6, 2004 Share Posted August 6, 2004 SRT Intake is suppost to increase HP and improve the fuel economy. Quote Link to comment Share on other sites More sharing options...
Wicked_Lex Posted September 16, 2005 Share Posted September 16, 2005 Hello everyone - I'm new to the Owners Club, longtime Lexus owner just got a 2001 GS430. Used to have a 2000 GS400. I remember getting better gas mileage in the 2000 and on average am getting 17 around town...I know this may be about average but with Gas prices so high (am my lead foot) I would LOVE to find a solution or additive to help boost fuel economy. Please let me know if anyone has had luck with any devices or fuel additives in their cars. Thanks so much! -MJM Daytona Beach, FL ← As for additives, I can tell you what I have done for all vehicles that I have owned in the last 10 years. First, I add Super Slick 50 to the oil the first time I do an oil change. After about 2-3K miles I change the oil and filter. From that point on I use a synthetic oil and a good filter, changing both every 3-4K miles. Mobile 1 is good but there are other synthetics. Slick 50 and other oil additives cost about $20 and treat the engine for 50 – 100K miles by putting a Teflon coating on engine parts improving per-formance, fuel economy, and engine life. I put Super Slick 50 in a Dodge Dakota and after driving it 150K miles it still used no oil between changes! Synthetic oil reduces friction too, giving better performance/economy. Recently I drove my GS400 from California to the Midwest and averaged from 24.8 to 27.2 MPG at 75-80 MPH even though much of this distance is mountainous. If you do a lot of highway driving cruise control also saves gas as well as money spent on speeding tickets . A couple of other things to do to save gas that is getting more expensive: Coast more by letting up on the gas sooner Let the transmission shift up by leaving it in 'D' instead of '3' or '4' in ‘Power’ mode. Check tire air pressure. You can safely add at least 3-4 lbs to the manufacturer’s suggestion of 32 LBS. I’d keep it under 40 LBS. There are other gas/oil additives that claim to boost performance/economy but I haven’t tried any. Quote Link to comment Share on other sites More sharing options...
Lexus_gs400 Posted September 17, 2005 Share Posted September 17, 2005 Hello everyone - I'm new to the Owners Club, longtime Lexus owner just got a 2001 GS430. Used to have a 2000 GS400. I remember getting better gas mileage in the 2000 and on average am getting 17 around town...I know this may be about average but with Gas prices so high (am my lead foot) I would LOVE to find a solution or additive to help boost fuel economy. Please let me know if anyone has had luck with any devices or fuel additives in their cars. Thanks so much! -MJM Daytona Beach, FL ← That's better than my car. I run under 210 miles on 1 tank. Which I think I may have a big problem, Because GS 400 and GS 430 have 19.8 gallons on a tank and should run 17 miles per gallon. Quote Link to comment Share on other sites More sharing options...
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