Fuel discussions/questions - Octane Regular or Premium (merged threads)
02-11-14, 07:02 PM
#91
There was issue with 2007-2010 Toyota FJ Cruisers in which Toyota initially recommended premium fuel for the vehicle. Members of the FJ forum began hassling Toyota about the reason for this since the Tacomas and 4Runners used the same engine but used regular fuel. Toyota eventually sent out an e-mail stating that FJ Cruisers for those model years would have no issues using regular fuel.
That being said, I have always used premium fuel in my 2007 FJ Cruiser. There are members of the FJ forums that use regular fuel, but noted a decrease in engine performance and power loss. It's not significant since some FJ owners can live with that, but it is noticeable. I'd rather use my engine's full potential.
That being said, I have always used premium fuel in my 2007 FJ Cruiser. There are members of the FJ forums that use regular fuel, but noted a decrease in engine performance and power loss. It's not significant since some FJ owners can live with that, but it is noticeable. I'd rather use my engine's full potential.
02-11-14, 08:02 PM
#92
Racer
Does it really make a different? Try it and conclude yourself? Even at $8/tank if you pump twice a week it will add up. Shell Premium 91 is $.55 per gallon more than Shell 87 here.
Ever wonder why 2010 and 2011 RX350 recommended (not required) Premium but 2012+ RX350 recommends Regular? Same for the ES line.
The 4.7L in the GX470 is the same as the 4.7L in the Tundra and 4Runner but the Lexus asks for Premium while the Totoya asks for Regular. Same thing as 4.6L in Lexus and 4.6L in the Tundra.
Premium MAY help the engine running smoother and Lexus wants its customers to feel that way (at the customer's expense).
Ever wonder why 2010 and 2011 RX350 recommended (not required) Premium but 2012+ RX350 recommends Regular? Same for the ES line.
The 4.7L in the GX470 is the same as the 4.7L in the Tundra and 4Runner but the Lexus asks for Premium while the Totoya asks for Regular. Same thing as 4.6L in Lexus and 4.6L in the Tundra.
Premium MAY help the engine running smoother and Lexus wants its customers to feel that way (at the customer's expense).
04-06-14, 08:33 PM
#93
Racer
Is our gx engine compatible with 15% ethanol fuel
saw something on the news saying govt may mandate higher ethanol levels for gas and that it may damage engines and manufacterers will void warranty.
sorry. found answer. NO.
http://hotair.com/archives/2014/02/0...-use-e-15-gas/
mods can delete this thread if you want
sorry. found answer. NO.
http://hotair.com/archives/2014/02/0...-use-e-15-gas/
mods can delete this thread if you want
Last edited by T4Fun; 04-06-14 at 08:39 PM.
04-28-14, 09:30 PM
#95
Driver School Candidate
Join Date: Feb 2014
Location: Maine
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Fuel Questions - Premium or Regular
I wanted to get some feedback as to whether any of you have used regular unleaded (87), premium (89), super (91) or super plus (93) with your GX's or similar models?
Have you noticed a difference between either? The manual calls for premium but the gas tank cover only shows not to use low grade (85).
I currently use 91 but wondered if anyone uses any other grades and if there's any difference in mileage or performance.
Have you noticed a difference between either? The manual calls for premium but the gas tank cover only shows not to use low grade (85).
I currently use 91 but wondered if anyone uses any other grades and if there's any difference in mileage or performance.
04-29-14, 07:33 PM
#98
I wanted to get some feedback as to whether any of you have used regular unleaded (87), premium (89), super (91) or super plus (93) with your GX's or similar models?
Have you noticed a difference between either? The manual calls for premium but the gas tank cover only shows not to use low grade (85).
I currently use 91 but wondered if anyone uses any other grades and if there's any difference in mileage or performance.
Have you noticed a difference between either? The manual calls for premium but the gas tank cover only shows not to use low grade (85).
I currently use 91 but wondered if anyone uses any other grades and if there's any difference in mileage or performance.
05-01-14, 05:41 PM
#100
You meant "unleaded". Like other members said, you will feel some power lost. The knock sensor will adjust. Personally, I would use what ever grade the car manufacturer recommended. I use premium (91) on my 2006 IS350 and the wife's 2013 RX350 uses Regular (87).
what the gas cap indicates is DO NOT use E85 (gasoline with 15% ethanol). That is a complete different type/grade of gas
what the gas cap indicates is DO NOT use E85 (gasoline with 15% ethanol). That is a complete different type/grade of gas
05-01-14, 06:22 PM
#101
I will race you and you can use your gas and I will use the premimium recommended 
See the last thread on this.
https://www.clublexus.com/forums/gx-...s-regular.html
See the last thread on this.
https://www.clublexus.com/forums/gx-...s-regular.html
