Octane Booster

arizonamike

Senior Member

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• May 19, 2012

• #1

Guess i will start adding an octane booster additive to my gas. Any thoughts or recommendations.?

Thanks
Mike

 

TR3driver

Great Pumpkin - R.I.P

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• May 19, 2012

• #2

Look for something that contains MMT (if you can find it). The others don't do much, unless you use a whole lot of them. But back when I accidentally shaved too much off a head, I found that the MMT would form deposits that seemed to help, so after 5 or 10 tankfuls, I could back off a bit on the amount I used.

But the brand I was buying then got bought out by someone else, and they took out the MMT.

One thing to keep in mind when reading the advertising claims, a "point" is 0.1 octane number. There are other ways they "fudge" the number to make them look better than they are, but that's the big one.

 

T

tdskip

Yoda

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• May 19, 2012

• #3

Why do you need it Mike?

 

OP

arizonamike

Senior Member

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• May 20, 2012

• #4

There is no pinging or knocking now, but want to deter any and keep engine clean of any carbon build up.

 

TR3driver

Great Pumpkin - R.I.P

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• May 20, 2012

• #5

arizonamike said:

There is no pinging or knocking now,

Click to expand...

In that case, ignore what I said above. Any snake oil should do fine.

 

poolboy

Yoda

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• May 20, 2012

• #6

arizonamike said:

There is no pinging or knocking now, but want to deter any and keep engine clean of any carbon build up.

Click to expand...

The best way to prevent excess carbon is to have the ignition in proper time, the carbs mixture set correctly and drive in a spirted manner as much as the law allows.

 

M

Member 10617

Guest

Guest

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• May 20, 2012

• #7

Be sure to watch the Moss video on this topic. It will answer many of your questions and reinforces what Poolboy has said.

 

angelfj1

Yoda

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• May 20, 2012

• #8

arizonamike said:

There is no pinging or knocking now, but want to deter any and keep engine clean of any carbon build up.

Click to expand...

<span style="font-size: 11pt">
Mike: do you mean you wont be decarbonizing the engine every periodically </span> :lol:

 

OP

arizonamike

Senior Member

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• May 21, 2012

• #9

So, does anyone use an octane booster?

 

CJD

Yoda

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• May 21, 2012

• #10

Not since you can buy 93 octane at the pump. When 85 octane was all that was available I did for a while to try to avoid rebuilding to a lower compression. In the end, I wound up rebuilding it anyway...as Avgas and octane boost were just to pricey to use continuously.

By the way, the Avgas, mixed with pump no lead, worked the best...but hard to do on a road trip.

John

 

OP

arizonamike

Senior Member

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• May 21, 2012

• #11

Anyone remember Sunoco 260

 

PAUL161

Great Pumpkin

Silver

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• May 22, 2012

• #12

arizonamike said:

Anyone remember Sunoco 260

Click to expand...

Used it exclusively in my high compression Harley. I'm not sure, but I think it was 100 Octane. PJ

 

startech47

Jedi Knight

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• May 22, 2012

• #13

Blue gas

 

billspohn

Jedi Knight

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• May 29, 2012

• #14

arizonamike said:

So, does anyone use an octane booster?

Click to expand...

Octane booster on a stock British sports car is a waste of money as long as you have a premium fuel grade available.

The biggest single source of coking up is leaving the choke on too long, but people are impatient and would rather drive away with the choke on than start it, immediately take the choke off and sit there while it warms up, which is the proper way to do it, and, along with making sure running mixture isn't too rich, of course, pretty much eliminates any need for 'decoking'.

If you have no hot spots in the chambers, most sports cars will run on regular - my MGA (8.3) and MGC (9.0) certainly do, without ping.

I don't even use octane booster on my 10.7 Lambo.