Anyone else putting in 89 due to gas prices?
#16
Pole Position
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Location: Washington
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I think it's ok to use 89 octane gas (at the time SC was designed, there probably wasn't any 93 octane gas). It doesn't affect the engine reliability if you don't rev yours too high. High rev engine requires premium gas for pricise burning. Lower rate gas burns more violent, and can be out of synch.
I don't know where I got this information anyway ...
I don't know where I got this information anyway ...
#17
The 91/93 recommendation isn't needed for much of which what we would call 'normal' driving. It is at the engine's limits in hot weather that you will notice the difference. If you never drive your car hard, 89 will probably make no difference to you. But your car knows it and adjusts accordingly. Also, on the older 250hp engines the compression is much lower. It would probably take some very low gas of 85 or so to notice any knocking. On the 290hp+ models, the interference design raises the compression. I'd take notice of how hard I drove the car with less than 91 in the tank.
#20
rich gas poor gas
I drive an '06 es330 and it says right in the manual that you can use regular gas over premium gas but to expect less hp using regular. Thats the reason why the SAE numbers dropped because the hp had to be calculated using regular gas. I use regular gas and every time i get an oil change(~5,000miles) i put in a $0.99 fuel injector cleaner(preferably esso or mobil) and have always have great results doing this.
Dawg
Dawg
#21
This post is not meant to offend anyone BUT...if you can afford a 50-60K ride, why would a $.10-.20 difference in gas prices mean anything to you?
#23
Lexus Test Driver
Join Date: May 2004
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Originally Posted by tuan92129
OK.....i think the guy talking had the 1992 SC? I'm sure its not worth 50-60 K anymore, and EVERYONE is feeling the pain at the pump right now.
#24
Originally Posted by mr. aristo
both my lexus cars on on premium and gas can hit 5.00 a gallon and i'm still sticking with the good stuff
You took the words out of my mouth. Nothing is to good for my girls!!!
#27
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You guys really wanna mix it up?!
Use methanol / water injection...yes...on an N/A car. It would come on at a specific level of vacum instead of boost, that's all.
Let the car idle, sit in traffic and get around town on 89oct. Then when you hammer it and see big rpm or drive hard on hot days....let the methanol come online and cool everything off
Jay
Use methanol / water injection...yes...on an N/A car. It would come on at a specific level of vacum instead of boost, that's all.
Let the car idle, sit in traffic and get around town on 89oct. Then when you hammer it and see big rpm or drive hard on hot days....let the methanol come online and cool everything off
Jay
#29
Lexus Champion
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I would NEVER put anything less than premium in that gas tank. The buyer should know already that buying a Lexus will cost you when your at the pump too. It's like someone wanting to buy a SUV but yet is naive about the dollars needed to pay at the pump. Premium or even Sunoco's Ultra from time to time.
#30
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Originally Posted by MeanLex
And, I only use highest grade available...it's 93 in my area. Putting in 89 octane would only save me between $2~$3 per tankfull...not worth it IMO.