RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

which gas do you use? also..is Ethanol bad?

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Old 01-27-20, 08:11 AM
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fabchef
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Default which gas do you use? also..is Ethanol bad?

Hi everyone, how goes it? was curious to know what type, gas do you put into your rx's? as well, is ethanol good for the car?
I usually end up putting in gas from the major, top tier gas stations. most of the stations have a sign stating that their gas contains a small % of ethanol. I usually put in $hell as it's 91 octane doesn't have ethanol in it. in terms of milage i find i get a pinch more when using this gas.
fab
Old 01-27-20, 08:54 AM
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swfla
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Please do a search on any of the forums here. Both subjects have been debated too many times for it to happen again.
Old 01-27-20, 09:31 AM
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Margate330
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I usually run Mobil gas but down here in FL it has been 87 or 89 or 93 octane(no 91) lately so I been running 89 but getting ready to try the 93.

Also, I have no idea how much ethanol is in it- I would prefer none.
Old 01-27-20, 04:30 PM
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92 Premium........up here.
Old 01-28-20, 06:06 PM
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CAJensen
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Originally Posted by fabchef
Hi everyone, how goes it? was curious to know what type, gas do you put into your rx's? as well, is ethanol good for the car?
I usually end up putting in gas from the major, top tier gas stations. most of the stations have a sign stating that their gas contains a small % of ethanol. I usually put in $hell as it's 91 octane doesn't have ethanol in it. in terms of milage i find i get a pinch more when using this gas.
fab
ethanal free is what I use. I get way better milage than with premium fuel. Just my preference.
Old 01-29-20, 11:41 AM
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swfla
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I follow my owner's manual specs. My vehicle runs great. It's all computer controlled to run at those specs.
Old 01-29-20, 01:20 PM
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tomr51
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95 or 98 in Australia. No ethanol
Old 01-29-20, 05:57 PM
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Margate330
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Originally Posted by tomr51
95 or 98 in Australia. No ethanol
Nice!!!

Closest thing I've seen around here is 90 octane recreation fuel/no ethanol but it is more expensive
and few stations carry it- approx $4 gal last I seen it.
Old 02-03-20, 07:34 PM
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Sirachacha
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All this fuel lookup, i'm gonna get watchlisted lol but here's a good video more 101 than 201 but ye (sponsored by Shell):

also https://www.toptiergas.com/ has a list of high rated brands.. if you want to double check.
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Old 02-03-20, 09:22 PM
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DavidTB
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Default 93

No 91 in Michigan so I use 93 octane, in my 08 RX 350, and my wife’s Infinite G 37 small amount of ethanol in it.
Old 02-06-20, 07:17 AM
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matts6887
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here in arizona; there isnt 93; only 91 so thats what ive been running; sometimes i use shell which is probably one of the better fuel brands i think because its a bit pricier than the other brands out there; but depending where i am sometimes I have to use others like convienience store brand fuel which i know is not t he best for these engines probably. Ive also used costco gas which might not be the best but its also less expensive. i think our fuels here in arizona do have a little ethanol in it because of enviromental mandates etc
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Old 02-06-20, 07:21 AM
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matts6887
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and that is just another reason among many i plan on going back to toyota because the highlander im looking at doesnt require premium fuel; it can run fine on regular. im tired of my bank account going toward premium every time. ive been doing it for a bit over 3 years now and its enough.
Old 02-06-20, 07:54 AM
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Sirachacha
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Originally Posted by matts6887
and that is just another reason among many i plan on going back to toyota because the highlander im looking at doesnt require premium fuel; it can run fine on regular. im tired of my bank account going toward premium every time. ive been doing it for a bit over 3 years now and its enough.

Kirkland (Costco) is actually rated as a top tier gas. I've been debating using it but I just stick to shell. They're at 93 in NJ but it is what it is.
too many comparison videos out there and that's just what I'm comfortable with
Old 02-06-20, 01:45 PM
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Up until the last two years, we ran Chevron premium (91) in our 2009 RX350 and it's ludicrous expensive. We now run Costco premium (91) and haven't noticed any difference in how the car runs. When we replace this car, we will definitely check what gas it requires before we purchase!
Old 02-08-20, 07:30 AM
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matts6887
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Originally Posted by Sirachacha
Kirkland (Costco) is actually rated as a top tier gas. I've been debating using it but I just stick to shell. They're at 93 in NJ but it is what it is.
too many comparison videos out there and that's just what I'm comfortable with

yea they dont have 93 here in arizona; highest octane at normal gas pumps is 91. I normally try to use shell as thats probably t he best for these older rxs at least thats what im thinking and also because im still driving it with a rod knock in it and so hopefully we can move on the vehicle switch soon as i dont know how much longer i have before this sucker "grenades" on me. but hopefully the premium might prolong such a event. dont know though as im no mechanic.


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