Apparently Never run; NO gear wear pattern visible!! RUST PITS FROM sitting outside! I Glass bead blasted and magnafluxed proving NO cracks or left over Iron Oxide (rust Yorba Linda folks) ! Will run fine and hold more oil in my opinion. NEVER RUN IN A 12 degree box!! CLOSEOUT, no whiners, please...I can cell transfer pics of the 25s. PM me with your cell number. Also have a set of TEN degree 67% LIKE NEW!!!! No trades please.