YouTube Official Cold Start Thread

[1quick]

That and the winter blend difference.

The difference between summer and winter-blend gasoline involves the Reid Vapor Pressure (RVP) of the fuel. The EPA says conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which is one reason why gas mileage is slightly better in the summer

They use butane to bump the vapor pressure up and it’s a lot less efficient, they started blending the the max the epa would allow a few years back so the mpg got a little worse

 

[1quick]

And if you let it warm up for a few minutes that adds up and kills your mpg

 

[Thirdgen89GTA]

stupid question...why does gas mileage seem to change in colder weather,anyone else notice?

Cold engine, more friction, worse combustion until up to operating temperature. Colder fluids create more parasitic loss too as the bearings, transmission...etc all take longer to warm up.

Modern engines also run richer when cold, so since the engine takes longer to warm up, it runs richer.

Fuel also has less energy, because it has more additives designed to allow it to vaporize better. With gas its the gas that burns, not the liquid. So the additives help it vaporize at lower temperatures better, but reduce the BTU's per gallon.

 

[DEEZUZ]

What he said

 

[HellPIG]

Any effect on the octane rating when they bump up the butane?

 

[nytebyte]

This engine just ain't happy.

 

[Spivitz]

https://youtu.be/NHCyyphehG0

 

[1quick]

Any effect on the octane rating when they bump up the butane?

It’s supposed to be the same, but it more prone to detonation than summer blend

 

[IZZy]

My scat pack had the angriest cold start ever, wish I would’ve gotten on video

 

[Spivitz]

https://youtu.be/bfson8bqi8c

 

[HellPIG]

The "new" setup.

https://youtu.be/JMX5yZ5fCz0

 

[IceCreamAssassin]

Cucv

https://youtu.be/ZuQSeY9PmH4

White Blazer

https://youtu.be/Rl8ZG9t5Flw

 

[Marko]

 

[HellPIG]

It’s supposed to be the same, but it more prone to detonation than summer blend

I don't get into the high RPM's anyways this time of year, but I've always been curious. If we get a warm day, I'll data log it to see what is up.

I was tuned on shitty 93 anyways so I think I have a little buffer built in.

 

[Marko]

https://youtu.be/3z2s79TEgGc

Fixed

:likes:

What did you Fix ?

 

[Mr. SBF]

What did you Fix ?

The Youtube enabled quotes that you added. Video didn't work until I removed them as they are not needed.

 

[Marko]

The Youtube enabled quotes that you added. Video didn't work until I removed them as they are not needed.

That’s cool. I posted it using an iPhone and logged on using a new iPad Pro and it worked just fine. Before you fixed it. That’s weird

 

[Mook]

You only need to post the YT link. Been that way for at least a year now.

 

[Marko]

Just testing

https://youtu.be/3z2s79TEgGc


Lol. I don’t post vids too often.

 

[Blood on Blood]

https://m.youtube.com/watch?v=NoZARh_PX2A

 

[Mook]

RAW POWER

https://www.youtube.com/watch?v=k2TZe_sgHCI

 

[Blood on Blood]

Blunt
Force
Trauma

 

[IDAFC21]

God your neighbors must hate you.

(and yes I know what the Supra sounded like )

 

[Mook]

The Supra shook the whole damn row of townhouses Not even the Evo got that bad.

 

[Marko]

LOL @ you guys that don’t have remote start