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SUVs Lexus RX 300/330/350 2010 Lexus RX 350
260 messages, Last post on Aug 19, 2009 at 7:52 AM
You are in the Lexus RX 300/330/350 Forum. Your Hosts are steve_ & tidester
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Replying to: mickey34 (Apr 19, 2009 10:03 am) So if you're driving in hot weather (when higher octane is most usable), climbing steep grades, full load, etc. you may want to use premium to avoid the resulting retarded engine timing, which ultimately will affect performance and fuel economy to some (possibly not noticeable) degree. It shouldn't hurt the RX to run on 87 octane, though. Just performance. Especially if you drive moderately on flat terrain in cool weather. P.S. Lowering the tire pressure will make the ride softer and more dampened, definately at the expense of handling sharpness (on pavement) and fuel economy. I run at or near the max suggested on tire sidewall to maximize handling, fuel economy and tire life. But the ride does get "stiffer" which I don't mind.
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Replying to: la4mead (Apr 19, 2009 10:30 am) Probably not.... In modern day vehicles, at least for the last 5-8 years, spark knock is often NOT the problem, so retarding the ignition is rarely the solution. The engine/transaxle ECU is capable, using the crank position sensor, to tell if the detected knock/ping ocurring prior to ignition is due to low octane fuel. For low octane fuel the solution is slight enrichment of the mixture under knock/ping conditions, high throttle openings. For knock/ping due to engine lugging a simple downshift is used. If there is no downshift available then DBW will be used to dethrottle the engine and prevent damage.
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Replying to: la4mead (Apr 19, 2009 10:30 am) |
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Replying to: wwest (Apr 19, 2009 11:46 am) |
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| I don't notice much air flow when using the vented seats even in the highest setting # 3 any comments?? Thanks Mike | |
I am ready to purchase a 2010 RX with the Mark Levinson stereo system and Park Assist features. I am being told that they are not building them with these two options right now. Has anyone purchased/ordered a car with either of these features??
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Replying to: cameron41 (Apr 21, 2009 12:20 pm)
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Replying to: rparis (Apr 21, 2009 1:15 pm) |
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Replying to: cameron41 (Apr 21, 2009 5:04 pm)
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Replying to: rcf8000 (Apr 22, 2009 4:36 am) I would presume eventually you would get what you want but it might take a while. I had 2 dealers tell me Lexus tells them what they are shipping. I "ordered" the new hybrid and there are certain options I do not want (heads up, rear seat entertainment, park assist, accident avoidance) and certain I do, (sport package, levenson and the full lux and comfort pkg) We will see--but I have time other than just wanting the car. |
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