What type of gas 87 or 91

[Clark_Kent]

Is the Type R engine direct injected?

Yes.

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[Testa_Rossa_]

She get's nothing but 93 from me. I'd rather just fill it with the best then have it develop an issue or otherwise. Just makes sense and it's one less thing to think about.

 

[Zpeedster M]

Just sell it & get e-car

 

[CatD10]

Spark knock isnt always audible either, when it occurs the gasoline is exploding rather than burning. What can happen?
Blown head gaskets
Cracked pistons
cracked piston rings
Damaged Connecting rod bearings, rod bearing damage is the most common with knock but not always noticeable until later in the life of the engine.
It's your car do what you want.

 

[Greas]

This thread is a helpful reminder for myself for why I bought new instead of used.

 

[thatonedaveguy]

93 octane only, octane boosters cause issues.

From my tuner: NOTE: Do NOT use octane booster. Octane boosters have corrosive additives like MMT which cause spark plug and injector problems.

 

[TypeRD]

93 octane only, octane boosters cause issues.

From my tuner: NOTE: Do NOT use octane booster. Octane boosters have corrosive additives like MMT which cause spark plug and injector problems.

I’ve never used octane boosters, but after reading around a bit, not all octane boosters have Methylcyclopentadienyl manganese tricarbonyl (MMT or MCMT). MMT is not corrosive, BUT it can cause some buildup on the spark plugs. Likewise it also puts a bit more wear and tear on the catalytic converter.

Apparently a good booster is in fact ethanol (as mentioned earlier). It seems to me that mixing your own fuel may not be trivial, but I don’t know. Maybe it’s simpler than I’m thinking.

 

[SKINNIE]

So people are recommending to run 87 with octane booster to save $9-$15 per tank. Also running octane booster WILL damage and foul out your spark plugs.. WTF

Makes a lot of sense.

 

[Clark_Kent]

So people are recommending to run 87 with octane booster to save $9-$15 per tank. Also running octane booster WILL damage and foul out your spark plugs.. WTF

Makes a lot of sense.

This and it will likely be zero sum. Last I checked octane booster isn't inexpensive.

 

[VMtypeR]

Thanks for all the great information. I will stick to 91 gas.

 

[TypeRD]

So people are recommending to run 87 with octane booster to save $9-$15 per tank. Also running octane booster WILL damage and foul out your spark plugs.. WTF

Makes a lot of sense.

LOL! Was just trying to think of an alternative if 91+ is ridiculously cost prohibitive in some parts of the world. I didn’t know enough about it to say it’s a “good” alternative. Turns out it’s probably not, based on cost and the fact that some octane boosters may also provide a boost to spark plug wear.

 

[Websitesdown]

LOL! Was just trying to think of an alternative if 91+ is ridiculously cost prohibitive in some parts of the world. I didn’t know enough about it to say it’s a “good” alternative. Turns out it’s probably not, based on cost and the fact that some octane boosters may also provide a boost to spark plug wear.

I have come across 92 somewhere before. Don't remember where though.

 

[TypeRD]

I have come across 92 somewhere before. Don't remember where though.

Yeah…I feel like I’ve seen that too. That’s what I meant by 91+ (to cover the bases 92, 93, etc)

 

[Websitesdown]

Yeah…I feel like I’ve seen that too. That’s what I meant by 91+ (to cover the bases 92, 93, etc)

I for the life of can't remember off the top of my head.

Found this chart.

State	Regular Unleaded	Mid-Grade Unleaded	Premium Unleaded	Notes
Alabama	87	89	93
Alaska	87	88.5	90
Arizona	87	89	91
Arkansas	87	89	91/93	Northwest Arkansas primarily sells 87/89/91 octane. 93 octane is available at select Kum & Go's in the Northwest and Central regions of the state.
California	87	89	91
Colorado	85	87	91
Connecticut	87	89	93	86 octane may be sold if labeled as economy[1]
Delaware	87	89	93
Florida	87 [2]	89	93	91 octane premium is sold at select stations alongside 93 octane.
Georgia	87 [3]	89	93 [3]
Hawaii	87	89	92
Idaho	85/87	87/89	91	Octane ratings in Eastern Idaho are 85/87/91 in Western Idaho the octane ratings are 87/89/91.
Illinois	87 [4]	89	91	93 is widely available in the Chicago area. Elsewhere in Illinois, 93 is offered at Shell and select other stations. Many fuel stations now offer an 88-octane fuel blend that is 15% ethanol, suitable for use in some gasoline-powered automobiles from model year 2001 and newer.
Indiana	87	89	93
Iowa	87	89	91	Many stations will offer "Super Unleaded" 87 that contains 10% ethanol and a more expensive "Unleaded" 87 with no ethanol. 93 is available at select Kum & Go and Murphy USA / Walmart locations.
Kansas	87	89	91	All BP Stations offer 93 octane gasoline
Kentucky	87 [5]	89	93
Louisiana	87	89	93
Maine	87	89	91 without ethanol 93 with ethanol	Premium gas must be at least 93 octane if it contains 10% or more of ethanol
Maryland	87	89	93
Massachusetts	87	89	93
Michigan	87	89	93	85 and 86 octane may be sold if labeled as subregular[6]
Minnesota	87	89	91	110 octane fuel may be available at certain locations in southern parts of the state.
Mississippi	87	89	93
Missouri	87	89	91/93	Some Phillips 66, Break Time, and Conoco stations sell 91 octane premium. Southwest Missouri in the Ozark Mountains and Mark Twain primarily only sell 87/89/91
Montana	85.5 [7]	88	91
Nebraska	87	89	91
Nevada	87	89	91	Eastern Nevada primarily uses 85/87/91 octane ratings.
New Hampshire	87	89	93
New Jersey	87	89	93	New Jersey checks for fraudulent labeling of octane ratings.[8]
New Mexico	86	88	91
New York	87 [9]	89	91/93	93 is widely available.
North Carolina	87	89	93	91 octane is commonly sold as "premium" in the western, mountainous part of the state.
North Dakota	87 [10]	89	92
Ohio	87	89	93
Oklahoma	87	89	91
Oregon	87	89	92
Pennsylvania	87	89	93
Rhode Island	87	89	93
South Carolina	87	89	93	lower octane gas can be sold if labeled as "sub-standard" or "sub-regular"[11]
South Dakota	85/87	87/89	91	85 octane must be sold with a warning label displayed at the pump.[12] 85 and 86 octane can be sold as regular fuel only in the counties of Butte, Custer, Fall River, Harding, Lawrence, Meade, Oglala Lakota, Pennington, and Perkins.[13] 87 and 88 can be sold as mid-grade in the previously-named counties.[13]
Tennessee	87	89	93
Texas	87	89	93	El Paso, Lubbock, and Amarillo areas have 86/88/91 octane ratings.
Utah	85	88	91
Vermont	87	89	93
Virginia	87	89	93
Washington	87	89	92
West Virginia	87	89	93
Wisconsin	87	89	91	93 widely available
Wyoming	85	88	91

I got it in Washington on a vacation. I say OP goes with 85 and be a test dummy for everyone.

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