So you've been out to the flea market or garage sale and you found this great old Griswold cast iron skillet that you just had to have. You get it home and look it over and see years of someone else's grease on it, now what do you do. First its off to Google where you will find 10-20 different ways, baking it at high temp in the oven, easy-off oven cleaner and even sand-blasting it [don't do this as it will ruin the original finish].
Diecasts have been around since the 1940s way before Hot Wheels became popular from makers such as Meccano (Dinky), Dowst brothers (Tootsie). Popularity really took off in 1968 when Mattel launched the Hot Wheels line. I know as a kid I got my first Hot Wheel cars and action track Christmas 1968.