any downsides to running avgas?

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gixxer750

2jzget comingsoon!
Mar 30, 2005
2,333
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Mississippi
I've been running 101 LL Airplane fuel in my car because of the insane gas lines around here. There is no line there and it is much much better fuel(the only thing you can get here is regular 87 octane at the moment.). I have no cats, and I'm not concerned with the 02 sensors because I have plenty of spares. I have been putting in a bottle of lucas fuel system treatment with each tank because of the upper cylinder lubricants in it. I've heard that the avgas has less lubricant additives in it. It seems to run great in it and smoothed out my idle a lot, but I'm concerned as to wether or not there will be any long term effects to running this stuff in my 7m. Any input on this is welcome.
 
miggles

miggles

i wasnt speeding officer
Jun 3, 2005
526
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perth West Australia
the children,think about the childrennnnnn!!!
i tried running avgas,got told it has 8times more lead init than leaded petrol,and have to adv timing to take adv of the higher octane.Only used it once,just got a really sooty exh.The highest octane we have in aust is 98.
 
G

gixxer750

2jzget comingsoon!
Mar 30, 2005
2,333
0
0
Mississippi
um...... avgas is called 101LL..... that stands for low lead. If you have a turbo car you do not have to run more timing to take advantage of the extra octane. You can turn a knob on a boost controller and take advantage of the octane much much easier....

I don't have any problems with sooty exhaust. The stuff seems to clean the carbon off the combustion chambers and piston faces as well.....
 
ross1

ross1

New Member
Jul 14, 2005
188
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va
this sounds like a good idea, but i went reading a little and this says it's av gas is chemically different from normal gas http://www.groupk.com/gas.html i know this page is about jet ski's and the like but i thought some people might want to read...

anyway
ross
 
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