I just got my new head gasket and its MLS (multilayer steel) as opposed to the original which was composite-with-armor-rings. I've heard that MLS gaskets are better, but that they require better flatness and surface roughness specs. While I did have the head resurfaced, I have no way of knowing what roughness the shop achieved and I have no realistic way to resurface the block or check its flatness. The new gasket is OEM toyota, 58110: IH8MUD Forums - View Single Post - 13B-T head gasket is same as 3B Am I in for trouble, or should I shut up and trust Toyota? Are all my torque specs and such the same when I'm using the new type of gasket?