Why Premium fuel for 350h?
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
You're way off my friend, please read my post slowwly, Rav4 Prime Plug-in Hybrid (not regular hybrid) gross weight is about 5530 lbs, NX450h (also a Plug-in Hybrid) is about 5600 lbs (gross weight means with passenger in case you didn't know) so no cigar for you.
Last edited by BabyLFA; Nov 29, 2023 at 08:19 AM.
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
Several detailed engine descriptions and analyses above indicate the 350h engine isn’t identical to the RAV4. But here’s the thing. MPG is not the only metric or consideration owners employ. Some people want to have the car perform at its best expectations. Some people care about the long term effects on the engine from using the less than recommended octane. Some people care more about mpg for planet earth than a few extra pennies in their piggy bank. The mpg issue is very difficult to unpack because it’s impossible to replicate the claims of any individual’s reports, despite their reported procedure and sincere though they may be. Bottom line take away for me in all this—paraphrasing Droid13–every owner gets to decide which octane to use. Regardless of manufacturer recommendations, real world behavioral results, etc. Individuals have different values. Some people value speed and performance. Others MPG. Others favor responsiveness. The variables are near endless. Decide for yourself. Enjoy. We’re not engaged in conversion activity here…it’s a forum. Not a religion. YMMV
All I'm saying is that if you have a heavy foot, and want to get from one redlight to the next fast in your 350h, then yes, 91/93 octance is the way to go, I use 93 octance only on my LC500 I tend to drive fast in that car, and because on the gas cap it stated in clear bold white letters PREMIUM ONLY.
Pit Crew
Joined: Oct 2022
Posts: 196
Likes: 100
From: CA
When we tire of this discussion we can take up the subject of studying the anatomy of the left hind leg of a flea. But seriously I don't believe there is anything "nefarious" in Lexus' recommendation of using 91 octane but if you don't want to use it then don't. I was just amused by why one would care that much about the implications. You can provide an analysis demonstrating that on a per-mile basis the impact is 25% to 34% more in cost but when you translate that to actual yearly cost of maybe $200 to $300 more it completes the picture. Impact is like buying one Starbuck's a week. Looking at statistical percentages alone without looking at the actual numbers is only half the picture (and vice versa).
Pole Position
Joined: Dec 2012
Posts: 2,145
Likes: 960
From: Toronto, ON
Software rules all. Toyota and Lexus share a lot of mechanical components, but engine and transmission control software is not only tuned separately between Lexus and Toyota, but also tuned separately based on the model and market of car the engine goes into. Toyota is more conservative with engine control than Lexus, so its not uncommon to see Toyotas with the same engine sporting lower power claims than the same engine in a Lexus model. Many people have overridden the engine control software and put their own "tuning" in, completely changing the power and torque curves of the engine, even though the engine itself is mechanically unchanged.
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
Software rules all. Toyota and Lexus share a lot of mechanical components, but engine and transmission control software is not only tuned separately between Lexus and Toyota, but also tuned separately based on the model and market of car the engine goes into. Toyota is more conservative with engine control than Lexus, so its not uncommon to see Toyotas with the same engine sporting lower power claims than the same engine in a Lexus model. Many people have overridden the engine control software and put their own "tuning" in, completely changing the power and torque curves of the engine, even though the engine itself is mechanically unchanged.
Advanced
Joined: Dec 2004
Posts: 727
Likes: 175
From: West Coast
From another thread..... Note the Bold type.....
For the Lexus NX350h, the Lexus uses the A25A-FXS which has 188 HP and 179 lb-ft torque (as stated in the Droid posting)
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
Yes I know, if you read all the threads, I agreed with Droid about the tuning, and as stated above I was talking about using 87 octane gas in the hybrid engine, now give me your email so I can send you a certificate of achievement
Advanced
Joined: Dec 2004
Posts: 727
Likes: 175
From: West Coast
Hey Baby,
just pointing out your mis-statement, they are not the same engine configuration. Just correcting mis-information.
Thanks for the Certificate of Achievement. It really means a lot to me. Made my day.
Yeah, Sure.
You could even edit your post and do the world a favor.
just pointing out your mis-statement, they are not the same engine configuration. Just correcting mis-information.
Thanks for the Certificate of Achievement. It really means a lot to me. Made my day.
Yeah, Sure.
You could even edit your post and do the world a favor.
Last edited by Lexicon1; Nov 29, 2023 at 08:41 PM. Reason: response to the Baby
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
Hey Baby,
just pointing out your mis-statement, they are not the same engine configuration. Just correcting mis-information.
Thanks for the Certificate of Achievement. It really means a lot to me. Made my day.
Yeah, Sure.
You could even edit your post and do the world a favor.
just pointing out your mis-statement, they are not the same engine configuration. Just correcting mis-information.
Thanks for the Certificate of Achievement. It really means a lot to me. Made my day.
Yeah, Sure.
You could even edit your post and do the world a favor.
Advanced
Joined: Dec 2004
Posts: 727
Likes: 175
From: West Coast
I am starting to feel the love....Baby
Getting real technical there cupcake, but I hate to tell ya it's all the same engine and components, a little software update does not make it different, that's just like saying you have two identical cars then you go get a software tuned for one of them and all of the sudden it's now 2 different engine smh, sorry sugar go do more internet search and educate yourself
There is an obvious stock difference in HP ....whether accomplished by Software or Hardware.
just that facts ma'am
Yeah
Time to close the thread.....
Rookie
Joined: Jul 2020
Posts: 28
Likes: 3
From: LA
not sure why you started to comment on the HP and Specs, which I'm very impressed btw with the exact HP and Torque for both engines, your copy and paste skill is as good as it gets. If you have a mininum reading level of IQ, you would know the thread was about pumping 87 or 91/93 octane in that engine, there's no diffenrent besides the tuning, but you want to show how educated you are with the HP and Torque, we wasn't even talking about that, anyone with a 50s level of IQ like you could do a simple search and see the different in specs.
Advanced
Joined: Dec 2004
Posts: 727
Likes: 175
From: West Coast
Yeah Baby,
If one reads the very first post , (that's the one at the very top of the page) the OP speculates why the Rav4 and the Lexus hybrid require different octane fuel since they are the same engine. I and others responded to that specific question. I was impressed with Midcow and Droids great input. Yes, all I did was sift thru Wikipedia and copy and pasted my input, not much talent to do that, (and that's assuming Wikipedia is accurate) , I do acknowledge that. . I gotta love this Lexus community
Just an FYI: I did barely manage to graduate with a subpar level of " ejubication " from kindergarten and that is indeed my highest level of education. I was fortunate that someone else took my driving test for me because I would never been able to pass that exam.
Thank god for humor in this world and tolerance of others.
If one reads the very first post , (that's the one at the very top of the page) the OP speculates why the Rav4 and the Lexus hybrid require different octane fuel since they are the same engine. I and others responded to that specific question. I was impressed with Midcow and Droids great input. Yes, all I did was sift thru Wikipedia and copy and pasted my input, not much talent to do that, (and that's assuming Wikipedia is accurate) , I do acknowledge that. . I gotta love this Lexus community
Just an FYI: I did barely manage to graduate with a subpar level of " ejubication " from kindergarten and that is indeed my highest level of education. I was fortunate that someone else took my driving test for me because I would never been able to pass that exam.
Thank god for humor in this world and tolerance of others.
Driver
Joined: Jul 2022
Posts: 64
Likes: 40
From: TX
I am saddened by this thread. It's emblematic of the state of our society. It now seems impossible to have a conversation with differing points of view while remaining civil. Please, if you can't be civil, at lease be quiet.