Got an 08 FG XR6T with 109,000kms, zf was serviced at 92,000 with GW syntrans. Also installed external trans cooler to bypass the heatexchanger After the service the box started flaring when cold. Took it to another auto shop who said the box was 500ml low on oil so they topped it up. Seemed to be all good and no longer have a flare, but over the last few months have noticed the 2nd to 3rd shift isn't instant. It goes to shift and the revs drop just a little, they float there, then you feel the box make the shift and they drop again. Does this in auto, drive, P, but only at low to mid revs, anything over 4k and its fine Further, the car has more recently developed this other issue. Generally when cold, but sometimes when warm, sitting at around 60-70km/h, even with constant throttle (cruise control) the revs go up and down by up to 500rpm. Any lower speed or higher speed and the box doesn't do it I've heard of my earlier problem but not this before, and I can't understand why its developed only recently. Are both issues potentially oil level related? Also do they seem like things that can be tuned out of the box (I know this is bandaid fix), because will be getting a zf tune by the end of the year Cheers