I accidentally added 5 gallons of 110 leaded fuel to my FRS. Can I just run that much through the car and be ok or should I try and drain the tank? Draining it looks like a real pain in the ass. 5 gallons of leaded gas has about 10 grams of lead, would that be enough lead to kill the cat and sensors? Doesn't feel like that much would kill it? Thanks
How big is the tank? Fill it with hi-test and take a two hour high speed rip to burn off fuel and keep things hot. I think it will be OK but may be out voted shortly.
I understand oxygen sensors expect to live ~200 hours on leaded gas. Obviously not good for yours, so I second the burn it off quick idea. Or throw a test pipe on it till you refill the tank.
Siphon it out as best you can, then dilute with unleaded?
maschinenbau said:Siphon it out as best you can, then dilute with unleaded?
This. Siphoning with a pump through the filler neck is not too hard, it can even be done with a cheap squeeze pump but it is very time-consuming.
That new of a car doesn't have an anti siphon valve in the neck?
914Driver said:How big is the tank? Fill it with hi-test and take a two hour high speed rip to burn off fuel and keep things hot. I think it will be OK but may be out voted shortly.
Lead won't burn off the O2 sensor nor the catalysts.
5 gallons is more than enough to kill your catalytic convertors. Probably not enough to clog them, but enough to make them useless. The oxygen sensors will probably be fine.
it does not take much lead to poison a catalytic convertor
Disconnect fuel hose from rail, put it into a jug, jumper the fuel pump on?
ian sane said:That new of a car doesn't have an anti siphon valve in the neck?
Ah good point, may be best to hook up a hose to the fuel pump output (or rail input) at the top of the tank to an external gas tank and get it out that way. If you switch between ON and OFF the fuel pump will come on for a few seconds at a time, short of that you'd need to hotwire the pump (take extra care doing this around gas BTW!)
I can't recommend undoing the top ring of a Toyobaru's fuel pump basket after my own fiasco which will also require the fuel tank to be partially drained...it is submerged when the tank is over 3/4 full on level ground.
Good video on extracting gas at the fuel rail by hotwiring the fuel pump relay socket here:
Edit: Also this thread will show you exactly what to do hardware-wise. This guy uses a general-purpose PC interfacing with the ECU via OBD2 to get the fuel pump to run constantly, but you can use the hotwire or manual on/off method instead:
How did you accidentally do that?
Appleseed said:How did you accidentally do that?
Wrong pump at the airport.
Had to look it up, but old-school leaded road gas used to be 0.8 g/L and avgas is restricted to 0.56 g/L. I'm not familiar with 110 Avgas, I'm more familiar with 100LL and 115 so the standards might be different, but I think the EPA required no more than 0.56 g/L across the board by 1975. Having said that, I don't think it matters. It's not a concentration thing, it's cumulative. If you dilute it, you still have the same mass of lead in the tank.
I would drain it. Especially with the price of the metals used in them. I'll bet a replacement cat isn't a cheap thing these days.
x100 for drain/pump it out. We only put an hour on O2 sensors with leaded fuels before they start to look a little lazy and change them often (or remove if not actively tuning).
codrus (Forum Supporter) said:Disconnect fuel hose from rail, put it into a jug, jumper the fuel pump on?
that's what I have done with questionable fuel ,
I got an extra 12v pump and 12v jumper battery to power the pump.
I disconnected the stock 12v for safety
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