I wouldn't even be too concerned with 136k, I'm at 380,000 kms and all I have to do is worry about general maintaince, as long as you keep up with all the intervals and things like that, there's no reason you won't make that engine run clean to 500k.
Something I would suggest is maybe a trans temp gauge to see how that oil is doing. If it gets to a certain temp, it halts the life of the oil and seals for every 1 degree over. Secondly a good transmission oil like Lucas semi synthetic or the multi vehicle ATF is good. As I been tought, not all oil is created equally, and from experience, it does wonders on smooth shifting and dealing with heat.
Last edited by bsb2001ca; 1-4-13 at 1:00.