Premium vs regualr gas - Lexus IS Forum
User Tag List

 
LinkBack Thread Tools
post #1 of 10 (permalink) Old 05-16-2014, 08:37 PM Thread Starter
Newbie
 
Join Date: May 2014
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Premium vs regualr gas

I just bought a 2010 IS 350C and also own a 08 RX 350. The both have 3.5 V6 engines, both manuals say to use premium. I have run regular in the RX for 5 years and seems to run just fine. Put it into the IS and it seems fine too. Anyone have any thoughts?
nlombard1 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 05-16-2014, 09:02 PM
Fiend
 
Join Date: Apr 2013
Location: Jacksonville, Fl
Posts: 294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
           
Garage
Jaymaal904 is offline  
post #3 of 10 (permalink) Old 05-17-2014, 08:28 AM
Immortal
 
Join Date: Aug 2009
Location: Pittsbugh PA
Posts: 19,540
Mentioned: 8 Post(s)
Tagged: 4 Thread(s)
Quoted: 77 Post(s)
           
If it says to use premium then only use premium fuel! Do you really think the "premium only" sticker on your gas door means you have an option?
As mentioned on here many of times, using a low octane fuel in a high octane engine will result in severely reduced performance because the engine will attempt to adjust to the lower octane gas. In extreme cases, or with prolonged use of low octane gasoline in these engines, pinging or pre-detonation can occur and can eventually destroy your engine. Pre-detonation causes very hot conditions in your engine and can melt sparkplug and pistons over time.
So if you can't spend the couple extra bucks then sell your Lexus for a Prius, then you won't have that problem. But hey, it's your car and not mine.

'02 IS300 MSM LSD
jasonm4 is offline  
 
post #4 of 10 (permalink) Old 05-17-2014, 12:04 PM
Lurker
 
Join Date: Oct 2013
Location: College Park, MD
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
           
Garage
LMFAO! I have somebody ask me that every day. This sticker says use premium but I don't, is that ok? Lol
02_GGP_IS300 is offline  
post #5 of 10 (permalink) Old 05-17-2014, 02:22 PM
Loyalist
 
Join Date: Jan 2013
Location: Gardena (Los Angeles)
Posts: 1,527
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 87 Post(s)
           
Are you really that broke that you can't afford an extra $2 per fill up? That's all you're spending, if not less

-'03 MSM IS 300 5-Speed w/LSD - #REKT. Parted out
-'05 TCM Scion xB
-'08 Mazdaspeed3 Sport - Zoom-zoom.
RazoE is offline  
post #6 of 10 (permalink) Old 05-17-2014, 03:22 PM
Fiend
 
Join Date: Apr 2013
Location: Jacksonville, Fl
Posts: 294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
           
Garage
When you sign up you should be required to read the stickies before you can post. Smh...

Sent from AutoGuide.com Free App
Jaymaal904 is offline  
post #7 of 10 (permalink) Old 05-18-2014, 05:18 AM
Lurker
 
Join Date: Oct 2013
Location: College Park, MD
Posts: 103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
           
Garage
^^^ what he said.
02_GGP_IS300 is offline  
post #8 of 10 (permalink) Old 05-18-2014, 12:50 PM
Follower
 
Join Date: Jul 2013
Posts: 675
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
           
Quote:
Originally Posted by RazoE View Post
Are you really that broke that you can't afford an extra $2 per fill up? That's all you're spending, if not less
I don't know where you live, but around here, it's more like a $5 - $10 difference for a full tank. Just being realistic; I don't disagree with the sentiment. However, it shouldn't stop there: if we can educate the folks on why their engine needs the more expensive fuel, maybe they'll catch on and be able to make the decision for themselves.
reklipz is offline  
post #9 of 10 (permalink) Old 05-18-2014, 01:29 PM
Fiend
 
Join Date: Apr 2013
Location: Jacksonville, Fl
Posts: 294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
           
Garage
Quote:
Originally Posted by reklipz View Post
I don't know where you live, but around here, it's more like a $5 - $10 difference for a full tank. Just being realistic; I don't disagree with the sentiment. However, it shouldn't stop there: if we can educate the folks on why their engine needs the more expensive fuel, maybe they'll catch on and be able to make the decision for themselves.
It was explained in the link in the second post and also in the third post. I agree though premium is about 7 dollars more per tank here too.

Sent from AutoGuide.com Free App
Jaymaal904 is offline  
post #10 of 10 (permalink) Old 05-18-2014, 01:54 PM
Loyalist
 
Join Date: Jan 2013
Location: Gardena (Los Angeles)
Posts: 1,527
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 87 Post(s)
           
I always fill up at a 1/4 tank left, that's around 12 gallons. Premium is usually 20 cents more per gallon. That's only $2.40 more than regular. If you pump plus it whatever (honestly never pumped it in my life) that'd only be $1.20 more. If you can afford a $35,000 car, you can afford the price of a cheese burger every time you fill up.

-'03 MSM IS 300 5-Speed w/LSD - #REKT. Parted out
-'05 TCM Scion xB
-'08 Mazdaspeed3 Sport - Zoom-zoom.
RazoE is offline  
Sponsored Links
Advertisement
 
Reply

  Lexus IS Forum > Owner's Forums > IS350 Owner's Forum

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Lexus IS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. If your address is invalid, you will likely lose access to the site.

Email Address:
OR

Log-in











Current users viewing this Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Premium Gas? clarkman General Discussion 29 12-17-2007 02:18 AM
Premium Gas worldfalls General Discussion 45 07-27-2005 07:43 PM
Premium Gas? KeithR3 General Discussion 63 11-04-2004 08:43 PM
Premium Gas ? lew_b General Discussion 3 06-19-2004 06:40 AM
Article on Premium Gas vs. Regular Gas IS300 Fanatic General Discussion 1 10-19-2001 11:01 AM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome