I'm new to this, so please excuse the dumb questions.. I baught a 1990 firebird formula.. the rpo code for the suspension is ws6.. I'm puting new springs/struts/ball joints/a arm bushings/end links/tie rods/.. you get the point! i took off the rotors and first there was no seal over the inner bearing of either rotor, but my question is this... the grease in the middle of the rotor was light brown, but on the inner and outer edge it was a blackish color.. do i just use hi temp wheel bearing grease, or is there 2 different kinds? both rotors had the same colors of grease in the same locations.

 

Wipe out old grease and use some new wheel bearing grease. Heat and moisture and age can make grease turn all kinds of colors.