heat should be set to full hotness. there should be a engine drain also a radiator if you can get to both that would be good in flusing. toyota long life(red) or short life (light pink) is the best to go for any car. for bleeding i personaly just fill the radiator and try to squeese out what ever air i can from the hoses. then i start the engine off with the radiator cap off and keep filling it till it stops going down after a short while.