2025 NX 350. NX 250



2025 NX 350h



NX 450h+

 

I have octane anxiety due to past experience. Based on your photo you could do what I do and blend equal parts 87 and 93 octane to get 90 octane and call it good. I think you'll find that you save some $ over selecting 91 octane. Also, it's not just about octane. For instance Shell V-power nitro (93 octane in my area) contains more than 6 times the amount of detergent additives than required by the epa while its regular (87 octane) has more than twice the detergent additives. Fortunately, our Toyota engines are a hybrid of direct gas injection (dgi) and port injection (mpfi) where the intake valves presumably benefit from some amount of gasoline washing over them.
https://www.import-car.com/toyota-di...0disadvantages Probably more than you want to know - certainly more than I want to know.

 

Actually, save money and use 87 regular. But in answer, to your question , yes you can mix 87 and 93 and basically get 91.

Curious "based on past experience". Back in the old days with points and plugs retarding the spark did reduce pinging. Today the ECU is a computer that senses pinging and adjusts automatically and has "active learning". E.G. if you use regular most the time then you starting point is changed to a more retarded spark.

Use a top tier gas station; don't use cut-rate. Use REGUKAR octane 87. Should your ECU no be able to prevent pinging (unlikely) then use a higher octane.

Peace and No Pinging - but save $$

YMMV,
MidCow3

 

https://www.motortrend.com/how-to/en...ock-explained/

YMMV,
MidCow3

 

We live in a perfect world - computers don't break down or the programmers do not have bugs.

Peace and No Bugs - save $$ to buy a new Lexus when it's time to get one.

 

We have come a long way from vacuum tube reliability in the ENIAC and Captain Grace Hopper. Computers are omnipresent, ubiquitous, and very, very reliable; Your Lexus has hundreds of computers in it. So we are getting asymptotically close to perfection unless you contacted Jerry for a failure contract as a self-fulfilling prophesy.

Lexus Programmers are not the best, but most programmers write code to self-correct and avoid error situations; good programmers don't have :bugs" because they have identified and tested error situations and use fuzzy logic to imagine unknown situations ahead of time. Lexus 12 volt power converter algorithm programmers do not fall in to the category of good programmers.

@lsft with your NX 450h+ and only filling up 4-6 times a year, go for the premium gas ....good move in your case ...better "peace of mind"

YMMV,
MidCow3

 

More importantly, who says the octane level of your purchased gallon of gas is really 89 or 91 or 93 octane. You are at the mercy of whoever is mixing the brew at the refinery, whoever is delivering the product into the correct tank, etc etc. Personally, for a few "pennies" per year, not taking a risk on a turbo engine is worth it.
When was the last time you went to dinner w your significant other and spent a couple hundred dollars on a meal for two w tip in just one night ?
Also, anecdotal comments about having a turbo vehicle but putting in regular gas just means you have not had an issue.....so far. ...who needs so far.... In the case of a turbo engine, I lean in the direction of safety rather than to save a few bucks ....just my opinion.

 

I like your opinion.

 

There is an old saying from my long gone beloved mom.....".penny wise and pound foolish"... saving a few pennies is not an intelligent decision....just my opinion...