So ya after a 25dollar autozone reward credit I still paid 35 bucks for 6quarts of M1 40w and M1 filter. I couldnt believe it was that high. I guess it hit me hard since i dont drive the firebird much and doesnt need many oil changes. For that price I shoulda added oil for it along with my amsoil order for the civic. I have been wanting to try out the dominator series.