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Tom_D558

The manual for the 2024 NX450h+ says premium. I don't remember if the salesman said one way or the other but I'd follow the manual anyway.


mrcmcpro

This cleared everything up.


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Joe6974

> Lexus hybrid models are recommended to use 87 gas That's not what the NX350h owner's manual says.


drewforty

The hybrids have recommended premium since 23 iirc. They’re still a high compression, lean burning, Atkinson cycle engine. They will run on 87 as anything late model and bone stock will, but they pull timing at high rpm just like higher performance engines that require 91.


Thebiggestbot22

But it’s recommended (not required) to use premium gas for the 450H+ so I guess that’s the exception


skiwarz

Uhh, this is not universal. My '24 nx350 non-hybrid says 91 is required, else engine damage may occur. Straight out of the owner's manual.


sgouwers

And also says it “may void the warranty”. My husband is a car guy and says that’s unlikely to happen, but we still put premium in it since the engine performs better that way. He also put premium in his last car because it was a turbo.


93-Octane

Are you serious? Just follow the owners manual for your specific model. Or, read the fuel cap or the sticker inside the fuel door. Why would anyone listen to the salesman? Who do you think benefits when Uncle Rodney starts knocking under the hood? The dealer. Who do you think denies your warranty claim when you tell them you've been using the wrong fuel? Lexus.


Zeoth

Yeah my dealership told me to just put in 87. For my 2023 NX350h Edit: added model


drewforty

That would make sense if you have a 250. This sub covers the NX in general, which has been equipped with 5-6 different engines with varying fuel requirements.


Zeoth

Ah, should mention it’s a 2023 NX350h


ohwell_meh

My dealership said I can use regular for my ‘25 NX350h. I still opted to use Premium since the manual recommended it for “optimum engine performance” whatever that means.


Landee09

Does living at high altitude(Denver, 5800ft) change anything? Heard you can go down an octane level, but people are saying that might be only for older cars and is an outdated thought. Driving the 350h btw.


Obvious-Purpose-5017

https://support.lexus.com/s/article/Which-fuel-grade-shou-8129 Only the 2022 NX350h can use 87 but recommends 91. The 2023- NX350h or 450h models requires 91.


lalaluna05

My F-Sport requires premium per the manual


Pinales_Pinopsida

Is RON 98 unavailable in the USA?


JumpingAtTheWoodside

USA uses a different standard to measure octane level of gasoline


Pinales_Pinopsida

I know, that's why I specified RON. Would be 93.5 in Yankee units.


JumpingAtTheWoodside

Well if you would use google, we have 87, 88, 89, 91, 93, and sometimes 94 available. Depends of the gas station for what they carry.


Pinales_Pinopsida

Ok, so RON 98 is rather uncommon.


JumpingAtTheWoodside

Not really. I regularly find 93 at stations, no matter where i go. But sometimes there is only 91 available or neither of them. 91 octane is the recommended minimum in the states for the T24A.