Dr.Jass
Pastor of Muppets
Yes, but "Would it have cleaned the corrosion they caused?" is the real question. A friend went through this with his '77 Pontiac Phoenix (Chevy Nova with a Groucho disguise) after the lines were left off when he swapped from a V6 to a 455... and he'd refilled it with R12. You could still do that easily in 1996.