Regular or Premium Gasoline Required?
#91
Pole Position
Agreed, use the gas your car was designed for, simple as that.
I fill up at Costco so they circulate a lot of premium gas. I wonder if octane booster is added at the pump though - I can't imagine a fuel truck carrying separate compartments for Regular, Plus, and Premium.
I fill up at Costco so they circulate a lot of premium gas. I wonder if octane booster is added at the pump though - I can't imagine a fuel truck carrying separate compartments for Regular, Plus, and Premium.
My local BP station says that the regular tank gets filled 5 times more than the premium tanks due to the cost difference. Octane does deteriorate with time.
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ericsan13 (04-15-17)
#92
Agreed, use the gas your car was designed for, simple as that.
I fill up at Costco so they circulate a lot of premium gas. I wonder if octane booster is added at the pump though - I can't imagine a fuel truck carrying separate compartments for Regular, Plus, and Premium.
I fill up at Costco so they circulate a lot of premium gas. I wonder if octane booster is added at the pump though - I can't imagine a fuel truck carrying separate compartments for Regular, Plus, and Premium.
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ericsan13 (04-15-17)
#93
Racer
The car was engineered to run on a MINIMUM of 91 RON or 87 at the pump so it is design to run BETTER on a higher octane. The computer compensate for lower octane, but it never cease to amaze me how people interpret the wording in the manual, as if one MUST use the 87.
I use the middle premium just to be sure, I keep my vehicles for a long time
I use the middle premium just to be sure, I keep my vehicles for a long time
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Hubs (04-16-17)
#94
Keep in mind that any performance benefits from using a higher octane fuel with happen over several tanks of gas.
The computer is designed to make small adjustments as needed. So dont expect any immediate results.
The computer is designed to make small adjustments as needed. So dont expect any immediate results.
#95
Driver School Candidate
I been using Regular in my 2017 RX350 for last 5 months and ride has hesitation and knocking since Day 1. Last 2 tanks I switch to Shell Premium and can see the difference. SUV seeing very less hesitation and much smoother to Drive and hardly any knocking.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
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kkimbo (07-31-20)
#96
Racer
I been using Regular in my 2017 RX350 for last 5 months and ride has hesitation and knocking since Day 1. Last 2 tanks I switch to Shell Premium and can see the difference. SUV seeing very less hesitation and much smoother to Drive and hardly any knocking.I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
#97
Advanced
Thread Starter
More Additives in Premiun vs. Regular?
Sorry if this has been discussed before, but I couldn't find it. I know that the Top Tier gasolines in all grades (I use Exxon-Mobil) promise sufficient additives/detergents to protect the engines. But still, is the additive packages greater in premium vs. regular, or is it exactly the same in all grades?
#98
Have you talked to the Lexus service manager about the problems you've been having using regular?
The fuel requirements are determined by the manufacturer and not the sales people. I'd be upset if I had to spend $15 more per tank (regular vs premium) to get the car to run correctly.
#99
Pole Position
I been using Regular in my 2017 RX350 for last 5 months and ride has hesitation and knocking since Day 1. Last 2 tanks I switch to Shell Premium and can see the difference. SUV seeing very less hesitation and much smoother to Drive and hardly any knocking.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
As far as the hesitation, I remember it well when I had my 2016 RX350 and it was due to the tranny keeping it in too high of a gear in my opinion. Nothing to do with the gas.
Like I said before what gas you use is up to you, but most of todays vehicle just plain do not care.
ALSO, The "knock sensor" is dynamic and does not take several tanks to adjust, it is listening for the knock and takes appropriate action instantly.
Last edited by ggebhardt; 04-17-17 at 11:54 AM.
#100
#101
Racer
Sorry if this has been discussed before, but I couldn't find it. I know that the Top Tier gasolines in all grades (I use Exxon-Mobil) promise sufficient additives/detergents to protect the engines. But still, is the additive packages greater in premium vs. regular, or is it exactly the same in all grades?
#102
I been using Regular in my 2017 RX350 for last 5 months and ride has hesitation and knocking since Day 1. Last 2 tanks I switch to Shell Premium and can see the difference. SUV seeing very less hesitation and much smoother to Drive and hardly any knocking.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
I think Lexus Sales guys should stop telling people to use Regular as its no fun driving these expensive SUVs on a Regular Gas. I think its a Lexus Sales Gimmick to attract more customer by advertising that the car will run on Regular and no need to use premium.
I am sure Car will run on Regular but with a ride full of knocking and hesitation... I am thinking to try 89 also and see the difference between 89 and 91.
#103
Driver School Candidate
I think those knocks might be more droning and humming then real knocks. So I might have said it wrong when I mention Knocks. But Hesitation is definitely improved in lower gears with 91 and in Higher speed like 55+ it Cruises more smoothly..
Other thing is when you turn right from a dead stop it makes that noise also even in Sport Mode.
Other thing is when you turn right from a dead stop it makes that noise also even in Sport Mode.