[s-cars] Correct Bosch O2 sensor part number

[DOUGLAS LANDAETA]

S-heads,

Is it 13019 (Napa has this for $40)? or 13913?, I even saw a 15725. I
will be splicing (crimping) so the generic 3-wire is what I'm looking
for. Also, I read that a 4-wire could provide and extra grounding
connection.

Did I cause this problem by using an over-the-counter octane booster /
injector cleaner? I have to check the label - it might contain
silicones, which now I know is not acceptable. What fuel additives help
our cars?

Thanks
Doug L
'94S4