I know most of you wouldn't even want to think about answering this question but i'm curious. What would happen if you fill your cayenne up with leaded petrol? What' the most likely thing and the worse possible thing.

Cheers

 

You will destroy the cats, and eventually (after hundreds of gallons) ruin the O2 sensors.

Thats about it.

 

I don't think you can force the gas nozzle of an leaded pump down an unleaded neck. They made them smaller so you can't make that mistake. Also didn't Europe and many countries ban the use of leaded fuels? I don't think you can get it anymore.

If you were able to fill it up you would burn out your catalytic converters and render them useless.

 

Diesel is a different size, leaded is not. And generally most high octane race fuels which can be purchased in a 1 to 5 gallon can, or drum, is leaded.

It's not an uncommon practice to use leaded fuel these days what so ever.

 

Pump gas is not leaded nor is the race fuel that you can get at the pumps you put in the Track Cars since they have convertors. The race fuel that many race cars are using is leaded you are correct but it isn't pumped from a regular filler nozzle.

"A fuel deflector and restrictor are disposed in the filler neck of an automobile fuel tank to inhibit filling of the tank with improper fuel. An opening in the restrictor permits insertion of and delivery from a fuel nozzle used with non-leaded fuels, but the restrictor obstructs a larger diameter nozzle used with leaded fuels."

 

ok thanx for the answers guys... so all i have to worry about is the catalytic converters and the o2 sensor.. nothing major in my eyes. Is there a way round the cat damage? like if i fit a straight through pipe would that work? (no law here to stop me from doing that btw). Also, when the 02 sensor goes, how can i tell? would the car start driving funny or is it a matter of 'check engine' warning light?

 

Correct me if i'm wrong but doesn't the bypass pipe replace the cats? if yes, would a fabspeed bypass pipes sort out the cat problem that i'll have from using leaded petrol?

 

I've never checked but yeah if you use the bypass pipes and they circumvent the cats then problem solved.

When the O2's go, you will likely get a check engine light and it will run very rich. You will know something is up.

That being said it will take a couple hundred gallons of heavy fuel before you even begin to notice an issue.

 

Isnt there a goodside about leaded fuel..Performance wise? Heard it give the piston/cylinder a coating???? Running better/smoother?

 

thought i'll mention a lil while ago i noticed a sign on the fuel tank cover stating: leaded / unleaded petrol... I guess no worries then

 

Lead was used as a lubricant in the valvetrain, not really needed anymore with hardened valve seats. "lead poisoning" of oxygen sensors tends to make them lazy over time, they dont switch as quickly. Why would you want leaded fuel anyways? there are plenty of high octane non leaded fuels out there.
(edit: didnt notice youre from yemen until after I posted.... not sure about availability of fuels in your country)

 

I thought leaded fuel was only available in China!

Sorry for that, I couldn't help myself!
I do apologize if I offended anyone.

 

The availability of fuel in Yemen is low... We have oil (and good quality) but most of it is exported (oh... great.... but what do the local people do )

 

The bypass pipes only replace the secondary cats, so you would still have the primaries to clog up. And I'm sure that you'd kill the O2 sensors quickly and start throwing codes and maybe worse.