Leaded/Unleaded

[Alastair Young]

> a) On a GM vehicle, 2ltr 16V, ECU,  CAT, EGR, knock sensor etc.
>    Removing the CAT and running on Leaded fuel (higher octane rating).
>   Would ECU be able to tell ?, would any sensors (eg lamda) get 
> damaged ?
> 
> b) At some later time reverting to unleaded then replacing the CAT, 
> after allowing a suitable time/mileage to 'flush' out any lead 
> deposits.
> 
> c) What would be a suitable time/mileage...i.e. how long would any 
> lead deposits linger in the engine ?

Martin , Just something else that can be a problem is that the petrol 
filler nozzle  is larger for leaded fuel and you will find that it 
won't fit into the smaller filler hole of unleaded petrol cars  .

Alastair Young
ayoung at ndirect.co.uk