I had an interstate in a truck that got completely flooded up past the carb on two occasions. As RRR stated, a flush, fill, and charge and I still use it as a runner. The 440 on the other hand, was too full of silt to not rebuild
I DID not WORK in the battery shop , but picked up lead acid batteries to haul out to the aircraft , (b 52`s ) , the battery shop did exactly what RRR said. What they did w/ the old acid is not known to me , but there was a hell of a bunch of it . They changed the acid out regularly, every 2/3 flights I think-------or when one tested funny. They were big 24 volt batteries too !!
