Bf xr6t 130xxxkm on it running 320rwkw for 5 years (60xxxkm). Oil flushed with transmax z at 90xxxkm, still stock heat exchanger I think. Coped a fair hiding when I owned it, and still gets a decent workout from new owner, to my knowledge all is going well. Fg xr6t 60xxxkm on it running 400rwkw with daves zf tune for 2 1/2 years (20xxxkm). Oil flushed with lifeguard and external cooler added at 45xxxkm, did a few 1/4 passes and has done a few track days and a powerplay, all is going well with new owner.