Go Back   Club Lexus Forums > Lexus Model Forums > IS Models > IS - Third Generation
Sign in using an external account
Register Forgot Password?

View Poll Results: OCTANE - Which gas do you put in your 3IS
I always use 91 or higher. 138 91.39%
I sometimes use 89 or 87. 3 1.99%
I always use 89. 2 1.32%
I always use 87. 8 5.30%
Voters: 151. You may not vote on this poll

OCTANE - Which gas do you put in your 3IS and why?(merged threads)

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 10-13-13, 09:45 PM   #16
eyeball
Lead Lap
Trader Score: (0)
 
eyeball's Avatar
 
Join Date: Dec 2004
Location: California
Posts: 422
Default

Quote:
Originally Posted by vbx View Post
I think one of the excuse I've heard was they're leasing the car so who cares. But whats the point of getting the 350 to put cheap gas and get it to run like a 250.
That sucks then if u buy a certified pre owned
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
__________________
****************************************************************************
2014 Nebula Gray Pearl/Rioja Red IS350 RWD F-Sport NAV/BSM
2006 Flint Mica/Light Gray Rx400h AWD NAV/ML
2001 Black Onyx/Ivory Rx300 AWD with Nakamichi Audio System Package
****************************************************************************
eyeball is offline   Reply With Quote
Old 10-14-13, 07:57 AM   #17
carderoni
Pole Position
Trader Score: (0)
 
Join Date: Sep 2013
Location: VA
Posts: 238
Default

I don't understand why anybody would skimp on gas for a car like this. If you're that worried about $3 per fill up, you ahouldn't have bought the car in the first place.
carderoni is offline   Reply With Quote
Old 10-14-13, 09:37 AM   #18
LadyDallas
Driver School Candidate
Trader Score: (0)
 
Join Date: Oct 2013
Location: TX
Posts: 1
Default Premium Only

I will use Premium only after I pick up my IS today.
LadyDallas is offline   Reply With Quote
Old 10-14-13, 12:30 PM   #19
CtSFox
Lead Lap
Trader Score: (0)
 
Join Date: Aug 2013
Location: CT
Posts: 458
Default

Quote:
Originally Posted by eyeball View Post
That sucks then if u buy a certified pre owned
One reason why I never will by a car that comes off lease.
CtSFox is offline   Reply With Quote
Old 10-14-13, 12:33 PM   #20
enoren
Driver
Trader Score: (0)
 
Join Date: Jul 2013
Location: TX
Posts: 199
Default

Wow, people suck. I'm leasing and this is my second Lexus lease. I treat them like they're my cars, not like they're some rental from Enterprise. If the car requires premium fuel, use premium fuel. It's not complicated.
__________________

OWN: 2014 IS 250 AWD F-Sport, Black on Black
SOLD: 2009 IS 250 AWD, Black on Black
enoren is offline   Reply With Quote
Old 10-14-13, 01:38 PM   #21
LexFather
Guest
Trader Score: ()
 
Posts: n/a
Default

Race Fuel.......
  Reply With Quote
Old 10-15-13, 07:57 PM   #22
sportscar
Driver School Candidate
Trader Score: (0)
 
Join Date: Feb 2013
Location: MO
Posts: 15
Default

I test drove a IS250 non F Sport last weekend. Very comfortable seats and nice quiet ride. The salesman said with the 2014 models, you don't have to use premium gas. From what I am reading on the forum, that is not true. Is he just being a salesman? Please enlighten me. Thanks.
sportscar is offline   Reply With Quote
Old 10-15-13, 08:06 PM   #23
corradoMR2
Lexus Champion
Trader Score: (0)
 
corradoMR2's Avatar
 
Join Date: Jul 2006
Location: Toronto, Canada
Posts: 3,832
Default

Quote:
Originally Posted by sportscar View Post
I test drove a IS250 non F Sport last weekend. Very comfortable seats and nice quiet ride. The salesman said with the 2014 models, you don't have to use premium gas. From what I am reading on the forum, that is not true. Is he just being a salesman? Please enlighten me. Thanks.

When you go back to see him, pop the gas tank cover and show him the "Premium Unleaded Fuel Only" label. It doesn't say "Recommended" in which case arguably he would be right. This is across all IS's.
__________________

___________________________________________________________________________
2014 IS250 AWD F-Sport, 2013 RX350 F-Sport, On Order: 2015 NX200t F-Sport
IS Build Thread: http://www.clublexus.com/forums/buil...ng-thread.html
Previous: 2011 CT, 2008 IS AWD, 2007 RXh, 2004 RX
corradoMR2 is offline   Reply With Quote
Old 10-15-13, 08:11 PM   #24
Stitch626
Lead Lap
Trader Score: (2)
 
Stitch626's Avatar
 
Join Date: Oct 2013
Location: Florida
Posts: 783
www.facebook.com/p8ntballer26 P8ntballer26 PlayboySurfer69 Expirement626 P8ntballer26
Default

Quote:
Originally Posted by sportscar View Post
I test drove a IS250 non F Sport last weekend. Very comfortable seats and nice quiet ride. The salesman said with the 2014 models, you don't have to use premium gas. From what I am reading on the forum, that is not true. Is he just being a salesman? Please enlighten me. Thanks.
I was told the same thing when looking at the 350 non F sport maybe this is something Lexus told it's salesman who knows?
__________________
2014 IS350 F Sport | Vossen VFS2 | RS*R Down Springs | Skipper Japan Full Aero Kit | ARK Performance Grip Exhaust
| GReddy Intake | CF Engine Covers
Stitch626 is offline   Reply With Quote
Old 10-15-13, 08:11 PM   #25
Stitch626
Lead Lap
Trader Score: (2)
 
Stitch626's Avatar
 
Join Date: Oct 2013
Location: Florida
Posts: 783
www.facebook.com/p8ntballer26 P8ntballer26 PlayboySurfer69 Expirement626 P8ntballer26
Default

Quote:
Originally Posted by Blueprint View Post
Race Fuel.......
Of course you would lol I'm curious to put it in my car I have a SUNOCO around the corner from my house lol
__________________
2014 IS350 F Sport | Vossen VFS2 | RS*R Down Springs | Skipper Japan Full Aero Kit | ARK Performance Grip Exhaust
| GReddy Intake | CF Engine Covers
Stitch626 is offline   Reply With Quote
Old 10-15-13, 09:03 PM   #26
enoren
Driver
Trader Score: (0)
 
Join Date: Jul 2013
Location: TX
Posts: 199
Default

A few years back, Consumer Reports commented on the use of premium and mid-grade fuels. They said it's only worth using premium (or mid-grade) if the manufacturer REQUIRES it. If it's just RECOMMENDED (echoing Corrado), Consumer Reports said to use regular fuel.

Personally, I follow the recommendation of both Lexus and Consumer Reports: 91 Octane or higher in my IS.
__________________

OWN: 2014 IS 250 AWD F-Sport, Black on Black
SOLD: 2009 IS 250 AWD, Black on Black
enoren is offline   Reply With Quote
Old 12-17-13, 11:35 AM   #27
liqinwei26
Rookie
Trader Score: (0)
 
liqinwei26's Avatar
 
Join Date: Nov 2013
Location: WI
Posts: 65
Question Premium or regular gas???

I just did my first 5000 miles service at my local dealership, and while I was waiting for my 3is. I had a conversation with another staff. He told me that I can use 87 octane/regular gas on our 3is!!??! I said on the owner's manual it said clearly premium gas only, but he said all of their Lexus vehicles can use regular gases, and it will work fine. He also told me that the reason that Lexus put Premium gas only on the owner's manual it was because Lexus is a premium brand , and they don't want to be cheap. But technically speaking, regular gas is fine with 3is....

I knew for sure that 87 will lose some HPs, but not sure if it will harm the vehicle. ANy one can help me out here, is this really true that we can use 87 on our 3is?
liqinwei26 is offline   Reply With Quote
Old 12-17-13, 11:38 AM   #28
rominl
exclusive matchup

Trader Score: (4)
 
rominl's Avatar
 
Join Date: May 2002
Location: Lovely OC
Posts: 79,241
Default

you can, the computer is smart enough to retard the timing if necessary when you put regular, won't harm the vehicle. but for optimal performance, i say premium. it's only tiny difference annually compared to the price of the car
__________________
Yes, I drove it. The great feeling of boiling blood.
rominl is offline   Reply With Quote
Old 12-17-13, 11:43 AM   #29
moose66
Lexus Test Driver
Trader Score: (0)
 
Join Date: Aug 2007
Location: North Carolina
Posts: 1,029
Default

rominl is correct. In addition to that, these same engines are used in vehicles in countries where there is no such thing as premium fuel. So guess what they use? You will get arguments from both sides. I've heard it doesn't matter, you'll have a performance lag, etc., etc. Most folks with a Lexus will say, if you can afford a Lexus, you should be able to affort putting the best grade of fuel available. This, as with many things on this forum, you be the judge!
__________________
'14 Lexus IS350 RWD Obsidian/Gray
'13 Lexus GS450h Nebula Gray Pearl/Black
'06 Nissan Frontier LE Extended Cab - Black/Gray
moose66 is offline   Reply With Quote
Old 12-17-13, 12:48 PM   #30
4TehNguyen
Lexus Fanatic
Trader Score: (0)
 
Join Date: Jan 2006
Location: Houston, Texas
Posts: 18,098
Default

it will run like *** in the IS, friends of mine tried it. Power, smoothness, mpg were all horrid. There are certain cars like the ES (camry engine which uses regular), LX (tundra engine runs regular) that can get away with it.
__________________
14 IS350 Nebula Gray/Rioja Red + FSport + ML/Nav + JoeZ Intake/Exhaust
06 IS350 Crystal White/Black + Sport/ML + 2014 IS F Sport Wheels
4TehNguyen is offline   Reply With Quote
Old 12-17-13, 12:48 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
2002 Lexus ES300 using 87 Octane Gas? youngim87 ES300 and ES330 75 10-08-14 09:23 AM
Top Tier Gas GoGiantsNJ IS - Second Generation 18 03-10-13 06:27 PM
Racing fuel 100/110 octane lexsane IS F 44 10-22-12 07:05 PM
switching from 87 octane to 89 octane gas (IS250) JP250 IS - Second Generation 62 06-13-12 04:50 PM
2008 RX-350 Fuel Octane Rating Eddo RX - Second Generation 119 11-23-08 12:59 PM


Tags
110, 2014, 93, bad, gas, is350, lease, lexus, octane, premium, premiumgas, regulargas, run, rx350, shell

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 09:41 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info