Hello everyone, BruJoazul, Bien Bienbenido to the forum. With respect to the SSang Yong, how is the level of automatic cash oil?, Its color, is transparent or opaque. The movement you describe according to which you try to raise a hearth and do not advance, is similar to a draft test that is done to the box for diagnosis. Free the vehicle, you put and accelerate thoroughly (well frank) and write down the maximum rpm obtained. Max 5 seconds and then give back to idle so that the box of the box does not suffer overheating. If you tell me that the RPM reaches up to 1500 rpm approx, we could say a priori that the internal compounds of the box (discs, bands, free wheel bearings should not be skating, if the draft rpm are higher than the usual can be wear, damage to the torque converter or a hydraulic problem (ex Semaforo, right at the first moment?