RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

What fuel grade are you using in your RX350?

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Old 10-13-20, 07:31 PM
  #256  
GS4_Fiend
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Originally Posted by eddie420
I must admit, this is the first time I am reading about this. I have been to several Costco gas stations and never have I had to scan any membership card (I'm not a member!). I'll pay more attention when I go this week and maybe snap a few pictures. The more you know, thanks guys!
That is because you are from New Jersey. You are not allowed to pump gas by yourself. Others must live in a state where it is self serve.
Old 10-14-20, 05:29 AM
  #257  
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Originally Posted by GS4_Fiend
That is because you are from New Jersey. You are not allowed to pump gas by yourself. Others must live in a state where it is self serve.
That was the only other reason I could think of. Granted I have not been to a Costco out of state, typically I go Sunoco or whatever is on my route.

"New Jersey and Oregon remain the only states with laws restricting self-serve gasoline. In late March, Oregon made the practice optional in response to the outbreak, leaving the Garden State as the nation's lone holdout."
Old 10-14-20, 09:02 AM
  #258  
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Wow, had no idea that they're states that doesn't allow you to pump your own gas.... pretty ridiculous imo.
There's still a couple of full service stations in Raleigh, NC that clean your windshield and check the oil if you ask, but it cost more per/gal at those pumps.
I prefer to do these tasks myself glad I'm not breaking any laws here.
Old 10-15-20, 10:44 AM
  #259  
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I was raised in WA but went to school in OR. I could never get used to the idea of someone else pumping gas. It was always weird and so unnecessary.
Old 04-13-21, 07:29 AM
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thehaviet
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Default Regular Gas on '21 RX350?

Hi everyone, first time Lexus owner. Our 2021 RX 350 F-Sport is arriving this weekend.

Question: Is everyone filling up your RX 350 with Regular gas? Is anyone opting for Premium gas, or is that just a waste of money?

If Regular gas is the only gas needed, we'll be happy to save the extra $$$. Just making sure we're not leaving any potential performance benefit with Premium gas.

Thanks!
Old 04-13-21, 07:36 AM
  #261  
JasDmw
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Owners manual clearly states regular is fine. Anything else is a waste. One reason I traded my Gen 2 for a Gen 3; Gen 1 required premium.
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Old 04-13-21, 07:53 AM
  #262  
dibl
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Originally Posted by JasDmw
Owners manual clearly states regular is fine.
Owner's manual for my 2018 says "minimum". Not "use regular" and not "recommended". There's a reason or two for that.
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Old 04-13-21, 08:16 AM
  #263  
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Originally Posted by dibl
Owner's manual for my 2018 says "minimum". Not "use regular" and not "recommended". There's a reason or two for that.
People read what they want in the owner's manual.
I've said many times in this forum that that's a WARNING not to go below 87 octane, yet there are still people who say that the OM recommends 87 octane.
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Old 04-13-21, 08:45 AM
  #264  
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Does any owners actually fill up their RX350 with premium gas? If you did, notice any difference?

Old 04-13-21, 08:50 AM
  #265  
dibl
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Originally Posted by thehaviet
Does any owners actually fill up their RX350 with premium gas? If you did, notice any difference?
https://www.clublexus.com/forums/rx-...l#post11022650
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Old 04-13-21, 08:57 AM
  #266  
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Thanks. Interesting that you experienced better performance with higher grade gas.

Is Costco gas Tier 1? Same quality as Shell/Mobile?

Old 04-13-21, 08:58 AM
  #267  
TechNut
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From the owner's manual for 2021 RX 350:

Everyone has an opinion on this. There are numerous threads here if you run a quick search that will discuss this ad nauseum. The general consensus seems to be that anything over the recommended octane rating is a waste of money. FWIW: on a somewhat related note, the 450h manual states "Select octane rating of 91 or higher however.
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Old 04-13-21, 09:04 AM
  #268  
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Originally Posted by thehaviet
Thanks. Interesting that you experienced better performance with higher grade gas.

Is Costco gas Tier 1? Same quality as Shell/Mobile?
Yes both are Top Tier.
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Old 04-13-21, 12:01 PM
  #269  
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Originally Posted by JasDmw
Owners manual clearly states regular is fine. Anything else is a waste. One reason I traded my Gen 2 for a Gen 3; Gen 1 required premium.
That's not correct. My gen 1 RX stated in the manual any grade 87 or higher. Did not require premium.
Old 04-13-21, 01:01 PM
  #270  
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I use 87 and my vehicle has been running perfectly for me. The RX is an awesome vehicle but performance is relative. Mine has been performing excellent for a 4200 pound SUV running on 87. I have never noticed any lag or knocking or anything that would indicate that I need a higher octane gasoline.

I am also in CT and as you know the difference in cost is usually $0.50 - $1.00/gallon to move to a higher octane. It is not about the money ...if I thought that higher octane provided some benefit then I would use it, but using regular has been a welcome bonus with the RX. The difference in cost for most people is probably $400 per year depending on your commute. I would rather just keep the $400 to spend of something I want or need.

The main issue as mentioned above is using top tier fuel.
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