Car Whisperer

[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[summer_reine]

Well, I'll give it a shot. My car manual says I can feed him regular or premium but that if I cheap out he loses about 50hp. He has a turbo, so.. at -40 temps is premium or regular easier on the engine?

 

[Brains_N_Boobs]

https://www.barnorama.com/wp-content/uploads/2025/04/morning_picdump-19-1.jpg

 

[Brains_N_Boobs]

Well, I'll give it a shot. My car manual says I can feed him regular or premium but that if I cheap out he loses about 50hp. He has a turbo, so.. at -40 temps is premium or regular easier on the engine?

I believe you need to study "premature ejaculation", no really.


As premium fuel (ie. with a higher octane) is usually recommended to prevent uncontrolled detonation (aka knocking or pinging.)

Therefore, being able to compress the air/fuel mixture without causing detonation is important mainly for gasoline engines. Using gasoline with lower octane than an engine is built for may cause engine knocking and/or pre-ignition.[2]

https://en.wikipedia.org/wiki/Octane_rating

It is quite likely in your situation that regular fuel will do just fine.

 

[Brains_N_Boobs]

Oh, and I should add, that at -40* temps, nothing is good for your engine. The most wear on your engine always occurs at startup, and especially so with very cold temp startups. Hopefully you have a garage to park it in and when starting the engine the oil is a little warmer (a block heater would also help this.)


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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Brains_N_Boobs]

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[Lance_Castro]

“The New Pornographers drummer charged with possession of child pornography”​

Lol

 

[thør]

I believe you need to study "premature ejaculation", no really.


As premium fuel (ie. with a higher octane) is usually recommended to prevent uncontrolled detonation (aka knocking or pinging.)

Therefore, being able to compress the air/fuel mixture without causing detonation is important mainly for gasoline engines. Using gasoline with lower octane than an engine is built for may cause engine knocking and/or pre-ignition.[2]

https://en.wikipedia.org/wiki/Octane_rating

It is quite likely in your situation that regular fuel will do just fine.

Remember that air is denser at low temperatures, so more O2 coming in.....

 

[Lance_Castro]

Well, I'll give it a shot. My car manual says I can feed him regular or premium but that if I cheap out he loses about 50hp. He has a turbo, so.. at -40 temps is premium or regular easier on the engine?

I use Shell premium in everything because it’s generally considered the best or one of the best gasolines. ( see Top Tier Gasolines)

At -40 i would suggest the additional octane is even more important to optimum operation.

Also might depend on make/model/year, which you left out.

 

[xhxhxh]

Definitely need help

2012 Fiat 500 1.4 non turbo. Says misfire cylinder 2. I buy new coils and plugs buts still there. Some forum wrote if they’re not OEM, won’t work properly. Is that true? I replaced all four coils and spark plugs with no real difference. Should I clean the fuel injectors next or just buy OEM coils?

 

[Lance_Castro]

Definitely need help

2012 Fiat 500 1.4 non turbo. Says misfire cylinder 2. I buy new coils and plugs buts still there. Some forum wrote if they’re not OEM, won’t work properly. Is that true? I replaced all four coils and spark plugs with no real difference. Should I clean the fuel injectors next or just buy OEM coils?

Swap the new #2 coil and plug with another cylinder first.

If the misfire moves to that other cylinder, you have defective new coil/plug.

If the #2 plug is wet/black, you might have a bad injector or cylinder-specific issue

A bad wire can also be an issue… rodents like nesting on warm engines and eating wires in winter.

Bad gas? Try another station and a better grade.

Maybe some injector cleaner in your gas as well

It is a small displacement 13 year old motor, so a lot depends on how its been maintained, but goid clean oil, good gas, good coils and wires, clean air filter are the obvious ones

Air, fuel, spark…. It almost always comes down to one of the three!

 

[xhxhxh]

Thank u Sir!

 

[Lance_Castro]

Thank u Sir!

“FIAT”

Fix
It
Again
Tony!