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Who uses 87 octane in their 2010 RX350?

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Old 10-03-11, 07:23 PM   #16
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Quote:
Originally Posted by foxwiz View Post
You spend $40k+ on your vehicle and you want to skimp on a few dollars for gas?
Yeap, I used the 87 octane on my '07 RX, and I've been using it on the 2010 RX, and will probably continue doing so if I purchase any more RX's in the future!!

Now, the 2002 Nissan Maxima, that's a different animal. Drove that car for four years and couldn't put anything less than midgrade in that car, or else you would definitely hear the pinging!!
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Old 10-03-11, 07:51 PM   #17
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So I guess as long as we can be sure that using the 87 is not doing systemic damage to the engine, it seems reasonable to experiment to see what works best for you.
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Old 10-19-11, 06:53 PM   #18
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I use 87. Premium might give slightly better mileage but the price differential makes the lower octane more desireable. No harm will come to the engine since ignition timing is computer controled.
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Old 12-29-13, 09:44 AM   #19
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I have a 2010 RX 350 and use regular gas. I have tried premium gas and have notice no difference. Nothing. Nada.
Same gas mileage and same performance. I believe the computer reads the octane delay and adjusts accordingly.
And the octane level has nothing to due with crappy gas. I believe that is a very naive understanding of gasoline. Octane rating does't effect anything other than burn rate. The higher the octane the slower the fuel burns.
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Old 12-29-13, 11:35 AM   #20
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I use 85 octane in our 2010 and it runs the same as premium. I truly cannot detect any difference. The 85 octane gas is sold here due to the high elevation.
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Old 12-29-13, 01:27 PM   #21
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Quote:
Originally Posted by markrivers View Post
Ask yourselves this. When you first drove the RX out of the dealer's lot. It has a full tank of gas right?
Do you think the dealer placed a premium or just the regular unleaded?
Hmmm..
Our salesman confided in us that the dealer puts regular in their loaners.
Ray
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Old 12-29-13, 01:38 PM   #22
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Talking Premium Gas

Quote:
Originally Posted by BatmobileX View Post
So I guess as long as we can be sure that using the 87 is not doing systemic damage to the engine, it seems reasonable to experiment to see what works best for you.
We run regular in our 11. Once I put premium into the tank and an espresso machine came out of the dash and made me a latte. : )
Seriously, one tank of premium gave us +1 MPG and not much else.
If running regular would muck up the engine, there probably would be an escape clause from the legal beagles in the terms of the warranty.
The days of a carburetor gumming up from varnish in the gas are over.
I think the premium recommendation is to keep people away from the new 15% ethanol gas.
Hope this helps.
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Old 12-29-13, 04:57 PM   #23
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Well it's been two years since I made the original post and I've been using the regular ever since. Saved a boatload of money and never had any problems.
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Old 12-29-13, 06:57 PM   #24
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Quote:
Originally Posted by BatmobileX View Post
Well it's been two years since I made the original post and I've been using the regular ever since. Saved a boatload of money and never had any problems.
Excellent! I read through this thread earlier today and wondered what the OP decided to do. Good for you BatmobileX for making the decision that best fits your needs. My wife runs 87 octane in her 2010 RX350 with absolutely no issues. I run premium in my SC because I drive it much harder than she will ever drive the RX. If I drove the RX as often and as hard as I drive the SC, I'd probably run premium in it too. I've ran premium in the RX in the past and can't tell any difference under normal driving conditions.
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Old 12-30-13, 08:07 AM   #25
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Quote:
Originally Posted by BatmobileX View Post
Well it's been two years since I made the original post and I've been using the regular ever since. Saved a boatload of money and never had any problems.
Thanks for updating us. Here in Ontario (Canada), the price difference between 87 and 93 octance is 0.68cents a gallon. So, yes, it's almost 20% in savings.
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Old 12-30-13, 08:10 AM   #26
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Originally Posted by raylor4 View Post
Our salesman confided in us that the dealer puts regular in their loaners.
Ray

Haha .. Dealers have to save to survive.
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Old 12-30-13, 11:49 AM   #27
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Quote:
Originally Posted by raylor4 View Post
Our salesman confided in us that the dealer puts regular in their loaners.
Ray
I know! Right?
Then they sell these loaners as CPO.
And the poor buyer will gas up using premium ( after the RX has been drinking regular for the paat 1-2 years)
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Old 12-30-13, 11:54 AM   #28
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Read the manual and put whatever the manufacturer recommended! You are wasting your money otherwise (to pump Premium when not required). Brand of gas is more important.
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Old 12-31-13, 04:14 PM   #29
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The 2010, 2011, 2012, 2013, 2014 engine is the same as in the Highlander and for the Highlander all those years the manual says regular. Lexus put the premium in the manual to make the owners feel special, but after the economic crisis hit in mid 2012 they changed the wording to "Regular" in order no to scare the now poor RX buyers.
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Old 12-31-13, 04:14 PM
 
 
 
 
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2009, 2010, 350, 87, fuel, gas, gx, lexus, lexusrx350loweredfrom91octaneto87octane, octane, prem, premium, reg, require, rx, rx350, unleaded

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