the lim gaskets suck. i've replaced mine at 30k ago (car has 218k) they are leaking again. i ordered the aluminum ones from zzp for $52. stock type felpros are $50 at advance, an upgraded stock type is $96 at advance, so i got the aluminum one to try out.i just put in block sealer because i'm building another motor anyway. i hate to waste the good gaskets on a worn oout motor...easy job to do.