What fuel grade is everyone using on their 2012-2015 RX?
Driver
Joined: Dec 2011
Posts: 136
Likes: 7
From: Texas
ps: nice to see someone else from Sugar Land on this forum. Go Skeeters.
Lead Lap
Joined: Mar 2012
Posts: 571
Likes: 6
From: California
I trust someone from NASCAR will see this and realize they are wasting their MONEY putting on high octane racing fuel when they could fill up the race cars at Costco cheap crap regular for alot less!!!!!.....lololol
Lexus Test Driver
Joined: Oct 2006
Posts: 876
Likes: 2
From: FL
Thread Starter
Lexus Champion
Joined: Aug 2006
Posts: 12,589
Likes: 285
From: Illinois
I wondered how those NASCAR Camrys got that much speed and power from the 3.5 V6. Must be the racing gas. lol
Instructor
Joined: Jan 2003
Posts: 896
Likes: 56
From: IL
Yeah but did the premium car have more power? LOL
Lexus Test Driver
Joined: Mar 2010
Posts: 811
Likes: 8
From: CA
Just got off the phone with my brother. I had taken him down last Friday to pick up his new Prius Plug-in and he was giving me a summary after driving it to work all week. He said that he had driven 390 miles and had used 2 gallons of gas (195 MPG). As he has gotten used to the car his mileage has come up and he said he has gotten 221 MPG for the last four days. He does have a level 2 charger at both home and work (employer supplied). These numbers include about 15 miles that I put on the car driving it around last weekend without trying to do anything special (but, I was primarily using it in electric mode). The car did report that he had used about 50 KwH charging the car at home, work and while shopping. Anyway, I thought it would bring a little perspective to the regular vs premium discussion ...
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Last edited by UCSB; May 4, 2012 at 07:10 PM.
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Pit Crew
Joined: Feb 2012
Posts: 130
Likes: 4
From: FL
221 mpg doesn't mean anything to me when it does not use gasoline. It is a meaningless number any way I look at it. Plug-in cars burn mostly coal, natural gas and nuclear. I would have to see the payback on the additional investment for tha plug-in when he could have bought a Corolla for about $15k. In my mind he paid a premium near $16k plus taxes and interest. If he lives where he can buy electricity cheap it might not take as many generations to get a payback. The only way plug-ins are going to be attractive is if the utitlity industry builds additional power plants that produce low cost power, and that is not happening today.
Pit Crew
Joined: Feb 2012
Posts: 130
Likes: 4
From: FL
Tweaked for premioum fuel with 92 octane and a 10.8:1 compression ratio and equipped with a modern engine management system that incudes knock sensors, higher than 87 octane will buy you some extra power in these cars. You shouldn't need an automotive engineering degree to appreciate that.
But don't expect the difference to be like day and night. Most drivers can't notice a 10 or 15 HP difference with a 275HP engine in a 4200lb car. On a track on a very hot day, it would make a difference but for the way most people drive, it does not make for a noticeable difference.
But don't expect the difference to be like day and night. Most drivers can't notice a 10 or 15 HP difference with a 275HP engine in a 4200lb car. On a track on a very hot day, it would make a difference but for the way most people drive, it does not make for a noticeable difference.
Last edited by 2011RX350; May 5, 2012 at 08:03 AM.
Instructor
Joined: Jan 2003
Posts: 896
Likes: 56
From: IL
Tweaked for premioum fuel with 92 octane and a 10.8:1 compression ratio and equipped with a modern engine management system that incudes knock sensors, higher than 87 octane will buy you some extra power in these cars. You shouldn't need an automotive engineering degree to appreciate that.
But don't expect the difference to be like day and night. Most drivers can't notice a 10 or 15 HP difference with a 275HP engine in a 4200lb car. On a track on a very hot day, it would make a difference but for the way most people drive, it does not make for a noticeable difference.
But don't expect the difference to be like day and night. Most drivers can't notice a 10 or 15 HP difference with a 275HP engine in a 4200lb car. On a track on a very hot day, it would make a difference but for the way most people drive, it does not make for a noticeable difference.
Pretty good, I got five pages of posts and I was only asking about 5 horsepower!
Pole Position
Joined: Apr 2010
Posts: 258
Likes: 2
From: NJ
Thread Starter
Lexus Champion
Joined: Aug 2006
Posts: 12,589
Likes: 285
From: Illinois
Seriously, I thought it was interesting while looking on the Hyundai Genesis web site, that for the 4.6L V8 they show the horsepower and torque ratings for that engine using both regular and premium unleaded. The hp difference in that case was 7 hp (385/378).
That helps to take some of mystery out of things.
Instructor
Joined: Jan 2003
Posts: 896
Likes: 56
From: IL
OK, I can answer your initial question on this thread, and the answer is a resounding, maybe.
Seriously, I thought it was interesting while looking on the Hyundai Genesis web site, that for the 4.6L V8 they show the horsepower and torque ratings for that engine using both regular and premium unleaded. The hp difference in that case was 7 hp (385/378).
That helps to take some of mystery out of things.
Seriously, I thought it was interesting while looking on the Hyundai Genesis web site, that for the 4.6L V8 they show the horsepower and torque ratings for that engine using both regular and premium unleaded. The hp difference in that case was 7 hp (385/378).
That helps to take some of mystery out of things.