dew's z4 Dude
Member
There is always racing gas, and there are always octane boosters.
Or...
If your car can handle lead ethyline (sp?), you can use aviation fuels. Not legal :evil: , and it is bad for the catalytic converter, but it is 100 octane. There is also 100/130 octane for the old WWII fighters, but its rare (and expensive)... It will add a chance of lead fouling, but it will make the motor purr like a kitten sleeping on your lap, then growl like a hungry cougar when you jump on the gas.
I don't recommend running "leaded" fuels in any BMW. Most rubber parts in your fuel system are not designed to handle the lead in the fuel. The lead will cause the rubber seals and "O" rings to prematurely deteriorate, which could lead to fuel leaks and clogged filters.
Or...
If your car can handle lead ethyline (sp?), you can use aviation fuels. Not legal :evil: , and it is bad for the catalytic converter, but it is 100 octane. There is also 100/130 octane for the old WWII fighters, but its rare (and expensive)... It will add a chance of lead fouling, but it will make the motor purr like a kitten sleeping on your lap, then growl like a hungry cougar when you jump on the gas.
I don't recommend running "leaded" fuels in any BMW. Most rubber parts in your fuel system are not designed to handle the lead in the fuel. The lead will cause the rubber seals and "O" rings to prematurely deteriorate, which could lead to fuel leaks and clogged filters.





