Gas type

Tiny
PCULQUI
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 105,600 MILES
What gas type should I feed my vehicle?
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Sunday, May 24th, 2020 AT 5:03 PM

8 Replies

Tiny
KASEKENNY1
  • EXPERT
I have to say, I enjoy your questions. They are normally focused around properly maintaining your vehicle so I am sure this thing will last you a while.

I attached the recommendation from the manual. It calls for 87 or higher. They did all their testing and research on 96 octane but calibrated the engine to run just fine on 87. If it were me, I would run 87 and make sure the fuel station is a busy station and not an off brand fuel (cheap fuel like a cash only station). If the station is busy then the fuel doesn't sit long in the tanks and you have the best chance at not getting dirty fuel or watered down fuel. Once you find the station you like then I would stick with that station so in the event you get a poor batch of fuel, you know where you go it from because that is where you always go.

Next I would run a bottle of injector cleaner through the tank every other month or so. You don't need to be real regular with this but I would do it every 5 or 6 tank fulls of fuel. Its fine if you even only do it 4 times per year but you just want to make sure you try to flush any contamination out of the tips of the injectors.

Let me know if you have questions with this and we can dig deeper. Thanks
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Sunday, May 24th, 2020 AT 5:51 PM
Tiny
PCULQUI
  • MEMBER
I'm using 89 Octane. Do I still need to run an injector cleaner every other month? How about with 91 or 96?
Also, when a gas station is not busy, you were saying the gas just sits there in the tanks, and you risk getting watered down gas, what do you mean by that?
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Monday, May 25th, 2020 AT 2:51 AM
Tiny
PCULQUI
  • MEMBER
Am going to be using Gumout injector cleaner in my car. Should I use it immediately after refueling?
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Monday, May 25th, 2020 AT 3:09 AM
Tiny
KASEKENNY1
  • EXPERT
You do not need to use injector cleaner at all if you don't want to. It is purely a preventative measure to try and cut down the possibility of an issue. You could use this and still have an issue or not use it and never have an issue.

It is simply a good practice just to try and keep the injector tips clean for best performance.

What I meant about the gas station being busy simply means the more people that use the gas station the quicker they will go through the fuel in their storage tanks and require them to be filled again with fresh fuel. If the station is not busy then the fuel will sit in their storage tanks and the longer it is in there the more chance it has to be contaminated.

As for the 89 octane, that is just fine. You can still use the cleaner if you want too. It is not required but again, just a good idea no matter what grade fuel you use.

Yes. Just put the bottle in when you fill the tank. Normally the bottle has specific instructions but that is pretty common for them to put it in the tank when you fill it.
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Monday, May 25th, 2020 AT 4:07 PM
Tiny
PCULQUI
  • MEMBER
The reason I was asking was because I can switch to 87 Octane and save money by using the Gumout to keep the engine clean. The higher octanes come with something like Gumout built in that also cleans the engine.
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Tuesday, May 26th, 2020 AT 1:24 AM
Tiny
KASEKENNY1
  • EXPERT
The only difference between the grades is the higher the grade the better/more efficient the burn. When you don t get a complete burn of all the fuel it leaves deposits behind and that can effect the injector tips ability to spray the proper amount of fuel.

Just because you use a higher grade doesn t mean it burns 100% and leave no deposits. It just leaves less.

So if your vehicle calls for 87 as acceptable, as your does, I would use that and then just try to clean up the deposits by using that cleaner every so often. If that works out to be cheaper as well then that is a bonus.
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Tuesday, May 26th, 2020 AT 6:06 AM
Tiny
PCULQUI
  • MEMBER
Okay. Thank you for all that valuable information. I didn't know about all this carbon deposits that fuel leaves behind.
Thank you again.
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Tuesday, May 26th, 2020 AT 6:15 AM
Tiny
KASEKENNY1
  • EXPERT
You are welcome. Talk to you next time and thanks for continuing to use 2CarPros.
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Tuesday, May 26th, 2020 AT 6:24 AM

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