How often do you use 93 octane in your LC?

[W4632018]

I’ve heard running 93 octane occasionally, such as one full tank of 93 octane every 3,000 miles, helps “clean” the engine due to the additives.

Specifically in regards to 93 octane from Shell.

What do you guys think? Is it true?

 

[manofthewoods]

I’ve heard running 93 octane occasionally, such as one full tank of 93 octane every 3,000 miles, helps “clean” the engine due to the additives.

Specifically in regards to 93 octane from Shell.

What do you guys think? Is it true?

It will be interesting to get knowledge/comments.
I've been led to believe that top tier is all that is needed regardless of the octane.
Higher octane may degrade performance slightly, but I doubt it.

 

[ryanCA]

Never.

 

[Artie]

getting popcorn because there is no way to mute the thread.

I run it all the time, I tow all the time. I buy ethanol free when I can because my cruiser may hold that tank of gas for months because I don’t daily drive it. I’ve had several instances at out of the way gas stations where they are out of the cheap stuff so I’m not dealing with sticker shock filling up my main and LRA. One time I went cheap gas and I swear to god there was water or something in that gas because it ran like crap, I even posted on here about it thinking it could be something mechanical. A couple tanks later the issue was gone.

All this to say the cheap stuff is fine.

 

[bloc]

One periodic tank of good fuel won’t mitigate the effects of many tanks of crap fuel.

I’m on board with @manofthewoods on this.. consistently run “top tier” and you should be as good as possible.

 

[rscoleman]

Never

 

[eatSleepWoof]

With the same exact frequency that I reject Gal Gadot's advances towards me.

 

[Heckraiser]

I couldn't buy 93 octane here if I tried. 91 is top tier around here. I run 87 (which for you lowlanders, is mid-grade).

 

[krice118]

Every fill up on my LX. Makes me feel like I get better performance. No idea if it makes a difference.

 

[Artie]

I couldn't buy 93 octane here if I tried. 91 is top tier around here. I run 87 (which for you lowlanders, is mid-grade).

Top tier gasoline and high octane are not the same thing. Top tier refers to overall fuel quality based on a number of criteria, you can have top tier 87 octane.

Here is a good source for top tier gas stations.

 

[manofthewoods]

Top tier gasoline and high octane are not the same thing. Top tier refers to overall fuel quality based on a number of criteria, you can have top tier 87 octane.

Here is a good source for top tier gas stations.

Easy answer is costco, regardless of octane

 

[gasman4u]

I run top tier or "better" (bp claims their invigorate blend has detergent levels exceeding top tier) for mine. 87 octane after running a few tanks of 93 octane after I first bought it. This guy claims higher octane (and higher detergent levels) can decrease piston ring wear.

 

[Artie]

I run top tier or "better" (bp claims their invigorate blend has detergent levels exceeding top tier) for mine. 87 octane after running a few tanks of 93 octane after I first bought it. This guy claims higher octane (and higher detergent levels) can decrease piston ring wear.

I’ve read this about BP but why aren’t they considered on the top tier list?

Also, I’ve seen that video before, very compelling. Interesting how they can get the data on the rings.

 

[dudemancool1904]

Like @ryanCA said never. Even with crappy CA ethanol gas I rarely ever let a tank last longer than 10 days. And octane has zero to do with cleaning additives.

 

[hoot504]

Do you guys use any cleaning additives, BG 44k, etc?

 

[stonepa]

Never. Ever. I didn’t run it in my LX570 either. And I tow.

Top Tier is a marketing gimmick. All fuel in North America is most likely Top Tier- equivalent.

 

[77pantera]

Never.
I put non ethanol in vehicles that sit for a while.
I work in the petroleum business, you don't want to know what goes into and out of the ground.

 

[Julian73]

The engine sure doesn't need the added octane nor is even programmed to be able to take advantage of it. That said I do use 93 octane Super from Exxon, Mobil , Shell or Chevron about once every 10 tanks. These companies have invested a lot into cleaning additives and they do boost the premium grade, although its probably just as good and cheaper to us a can of Chevron's Techron once in a while. Yes these major manufacturers are "Top Tier" rated which the general non-brand gasoline industry settled on to show the auto manufacture alliance that they to use additives above the EPA regulated detergent minimums.

 

[ryanCA]

Do you guys use any cleaning additives, BG 44k, etc?

nope

 

[FrazzledHunter]

I never run 93 now but I filled up quite a few times on 2 long trips with varying terrain so as to measure gas mileage. It was when I saw no, I mean absolutely no, change in MPG with 93 that I went back to and have stayed with 89. I have no idea about 93's ability to clean an engine.