moondog4 Posted May 31, 2008 Share Posted May 31, 2008 Hello all, Just bought a 2005 ES330 with 36,000 miles in May 2008. Previous owner used a mid-grade fuel. Need help? Question: Can I use 87 octance fuel and combine a fuel booster when I fill up. If so, what ratio of ounces of booster to gallons of gas? What are the Pros and Cons of this idea? Thanks for you advice? Moondog Quote Link to comment Share on other sites More sharing options...
amf1932 Posted May 31, 2008 Share Posted May 31, 2008 You can use 87 octane fuel without any problems. This was taken right out of the Owners Handbook Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted May 31, 2008 Share Posted May 31, 2008 Yeah you can use 87, knock sensors will detect pre-ignition and !Removed! the timing resulting in lower efficiency and power. Some say they can't notice. Others can. I personally would do what is factory recommended. Oh and octane boosters are scams! Quote Link to comment Share on other sites More sharing options...
djspawn00 Posted May 31, 2008 Share Posted May 31, 2008 You could spend your money on octane boosters or you could give me your money for magic pixie dust... they both do the same thing... Spend the extra $$$ on the gas, i mean afterall you spend a lil extra getting a lexus instead of a corolla(which i just purchased and plant to drive all out of this summer) why cheap out now. Quote Link to comment Share on other sites More sharing options...
Lexusfreak Posted June 1, 2008 Share Posted June 1, 2008 Welcome moon B) I use regular in my 2005 ES & get fantastic gas mileage & the engine purrs like a kitten. ;) Quote Link to comment Share on other sites More sharing options...
dave t Posted June 1, 2008 Share Posted June 1, 2008 I normally use regular in both of mine. On a trip recently I tried premium in the 2005 ES330, found I got about 6% improvement in gas mileage, other than that no difference. I haven't ben able to find enough gas without ethanol to determine if it would make a difference. I've heard that 15% ethanol could reduce gas mileage by 10%. dave t Quote Link to comment Share on other sites More sharing options...
deniau Posted June 13, 2008 Share Posted June 13, 2008 Hello all,Just bought a 2005 ES330 with 36,000 miles in May 2008. Previous owner used a mid-grade fuel. Need help? Question: Can I use 87 octance fuel and combine a fuel booster when I fill up. If so, what ratio of ounces of booster to gallons of gas? What are the Pros and Cons of this idea? Thanks for you advice? Moondog I started with the cheap stuff and always had an issue with what appeared to be the transmission stalling. This is a known issue that you can read about at this site. When I changed to the high octane, one time just to try it, the problem went away and I had completely smooth accelleration. I also get better milage, and with the prices today it only costs about 20 cents more a gallon which is about 5% more for 6%, as someone stated, better milage. Quote Link to comment Share on other sites More sharing options...
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