If the oil is dirty on an SR they like to do that as well, but have you bled your lifters? I would advise against solid lifters if it's a daily driven car, they are loud, annoying, they put alot more wear on your cams, and well they just plain suck. Also if you haven't installed them before I wouldn't advise installing them because shimming them sucks, I just installed some on a customers car after I advised him against them and he is already talking about putting the stock lifters back in.