I have a '94 Chevy S10 which began to emit lots of white smoke from the
exhaust, enought to cover the car behind me if I was at a stop light.

I recently posted about this before, and have since put the truck back
together after trying to change the head gaskets, which I didn't get to do.

However, instead, and probably what I should have done from the beginning, I
used Bars Head gasket repair liquid.  Afterwards, I used a bottle of
antifreeze we had sitting around, yet when I poured it, it seemed to be just
water coming out.

Interestingly, it now only smokes midly at idle and not at all when driving
down the road.  Do you guys think the head gasket formula actually worked?
I always thought that stuff was snake oil, but at this point I was willing
to try anything.  Or does it have something to do with having mostly water
and not actual antifreeze in the truck.

regards