My car is a 70's Holden which I have converted to an LS1 unleaded petrol engine.

But I have retained the factory fuel tank which all its life has had leaded fuel thru it.

I had my tank sent away and professionally cleaned and flushed.

Just wanting to know will this be fine or if there are still traces of lead will this kill my new 02 sensors ?

 

The super small traces left over after a professional tank cleaning and flush should'nt hurt it a bit.