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Joined: Sep 2015
Posts: 10,193
Campfire Outfitter
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OP
Campfire Outfitter
Joined: Sep 2015
Posts: 10,193 |
I bought a used Lexus RX 350 , Lexus recommends preimum gas. what is your opinion?
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Joined: May 2016
Posts: 60,207
Campfire Kahuna
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Campfire Kahuna
Joined: May 2016
Posts: 60,207 |
I am MAGA.
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Joined: Oct 2009
Posts: 12,439
Campfire Outfitter
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Campfire Outfitter
Joined: Oct 2009
Posts: 12,439 |
Run what ya want.
WTF would Lexus know, anyway?
They probably own a gas station, or sumpthin.
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Joined: May 2003
Posts: 31,220
Campfire 'Bwana
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Campfire 'Bwana
Joined: May 2003
Posts: 31,220 |
Those Toyota engineers know what they're doing. My wife's Lexus RX350 and my Highlander had the same 3.5L V-6 engine. Mine was rated for regular unleaded and hers for premium. Different specs meant different octane minimums. Now, having said that, your RX's computer will adjust to almost whatever fuel you put in it, but long-term use might result in maintenance issues. I'd try to keep to their recommended grade if possible.
Cleverly disguised as a responsible adult.
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Joined: Oct 2013
Posts: 18,879
Campfire Ranger
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Campfire Ranger
Joined: Oct 2013
Posts: 18,879 |
Up to you.
I run premium in my 2 GM pickups.
Increase in fuel mileage doesn't quite offset the cost like it used to but I still run it.
8-10% increase in mpg for me.
The last time that bear ate a lawyer he had the runs for 33 days!
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Joined: Feb 2020
Posts: 2,387
Campfire Regular
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Campfire Regular
Joined: Feb 2020
Posts: 2,387 |
Dont know nutthin about a Lexus but my wifes Audi with 2.0 turbo in it says use premium. When I sneak in regular it sometimes gives a check engine light.
Life (and forums) is like a box of animal crackers----There's a Jackass in every box
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Joined: Jan 2012
Posts: 66,751
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2012
Posts: 66,751 |
Compression ration of about +/- 11:1
The 2020 model listed at 11.8:1
sounds as if high octane premium makes sense
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Joined: Jan 2012
Posts: 66,751
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2012
Posts: 66,751 |
Didnt any of you Boomers drive any Detroit muscle back in the day with 10:1 slugs ?
Sheesh
Bunch of Matador station wagon homos
Sheesh again
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Joined: Sep 2014
Posts: 21,735
Campfire Ranger
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Campfire Ranger
Joined: Sep 2014
Posts: 21,735 |
Try to run what the OEM recommends.
Their engineers just might know more than most nitwits.
This nitwit will also tell you that more octane is a waste.
If you don't need it, it ain't gonna do anything for you.
Parents who say they have good kids..Usually don't!
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Joined: Apr 2010
Posts: 8,152
Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2010
Posts: 8,152 |
Try to run what the OEM recommends.
Their engineers just might know more than most nitwits.
This nitwit will also tell you that more octane is a waste.
If you don't need it, it ain't gonna do anything for you. I know you’ve worked in the fuel industry and maybe you can explain to me. My pickup says to run basically whatever, E85/87octane regular, but for best performance or when towing to run 91. Is it because it changes the timing when under load or driven hard due to the computer mapping the throttle input? It can’t be compression since it doesn’t swap the pistons out when you hit the tow haul button. Like 10gaugemag with his GMs my Ford will show a slight increase in mileage but not enough to offset the cost of Super. My old truck would rattle and knock like dammit on regular 87 under load but the new one I can’t tell a difference.
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Joined: Jul 2018
Posts: 10,671
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2018
Posts: 10,671 |
I think most newer vehicles just adjust the ignition for whatever you put in there. I did a tank of regular until almost bone dry and then premium. No difference in gas mileage or performance. I don’t hear knocking or anything either way.
Progressives are the most open minded, tolerant, and inclusive people on the planet, as long as you agree with everything they say, and do exactly as you're told.
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Joined: Jul 2013
Posts: 135
Campfire Member
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Campfire Member
Joined: Jul 2013
Posts: 135 |
My Chevy Silverado with 6.2 engine says premium RECOMMED. I run midgrade most of the time with no problem. My wife's Auddi with 3.0 supercharged engine says premium REQUIRED!!! This is right on the gas cap fill area. I only run PREMIUM in it. I think it's important to run whatever the engine calls for.
Mike DeLuca----wyomike
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Joined: Sep 2011
Posts: 60,649
Campfire Kahuna
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Campfire Kahuna
Joined: Sep 2011
Posts: 60,649 |
The manure for the old Cat loader says, use the cheapest fuel that gives satisfactional performance.
If it does not ping. I'd use it.
These premises insured by a Sheltie in Training ,--- and Cooey.o
"May the Good Lord take a likin' to you"
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Joined: Jan 2012
Posts: 66,751
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2012
Posts: 66,751 |
Manure
I bet you meant manual but those guys on the slang thread will have a hissy fit meltdown.
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Joined: Dec 2008
Posts: 8,289
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2008
Posts: 8,289 |
My wife's Mustang 5.0 is 12:1 compression, premium only. Lots of magic in that car to make it run even on 91 octane (3k feet here) . My old vette is 11.3:1, and 91 octane premium is on the edge depending on timing and temp. But I can get 108 race to blend in from the pump here, so life is good.
It's the cost of performance engines and higher compression.
"Life is tough, even tougher if your stupid"
John Wayne
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Joined: Jul 2002
Posts: 4,216
Campfire Tracker
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Campfire Tracker
Joined: Jul 2002
Posts: 4,216 |
I use real gasoline, no corn gas in my old 04 Ranger. I is as said earlier it give better mileage but not enough to justify the price. I just don't like what ethanol does when it sits for a while in the tank. I use my bicycle for short hops in town and the Ranger for huge loads of groceries etc. Going to the Liars' Table at the local Mom and Pop restaurant I ride the bike. Be Well, RZ.
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy. Its inherent virtue is the equal sharing of misery. Winston Churchill.
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Joined: Dec 2004
Posts: 14,481
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 14,481 |
Try to run what the OEM recommends.
Their engineers just might know more than most nitwits.
This nitwit will also tell you that more octane is a waste.
If you don't need it, it ain't gonna do anything for you. I know you’ve worked in the fuel industry and maybe you can explain to me. My pickup says to run basically whatever, E85/87octane regular, but for best performance or when towing to run 91. Is it because it changes the timing when under load or driven hard due to the computer mapping the throttle input? It can’t be compression since it doesn’t swap the pistons out when you hit the tow haul button. Like 10gaugemag with his GMs my Ford will show a slight increase in mileage but not enough to offset the cost of Super. My old truck would rattle and knock like dammit on regular 87 under load but the new one I can’t tell a difference. Actual compression stroke-by-stroke is dependent on conditions such as RPM and load, and can change as conditions change.
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Apr 2005
Posts: 30,879
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2005
Posts: 30,879 |
I got banned on another web site for a debate that happened on this site. That's a first
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Joined: Oct 2013
Posts: 18,879
Campfire Ranger
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Campfire Ranger
Joined: Oct 2013
Posts: 18,879 |
Manure
I bet you meant manual but those guys on the slang thread will have a hissy fit meltdown. Manure or manual tranny?
The last time that bear ate a lawyer he had the runs for 33 days!
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Joined: Jan 2001
Posts: 30,725
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jan 2001
Posts: 30,725 |
wife's '11 GX 460 says 91 octane
we run mid range 87 (Utah high elevation) & runs great
I run 85 oct in my '03 Lexus LX...purrs like a kitten
T R U M P W O N !
U L T R A M A G A !
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