Volvo Olympian 3-Axle (Batch 2)
Lifespan Extended Till 01 June 2016:
SBS9513D -
SBS9518R, SBS9520H - SBS9527P, SBS9529J - SBS9533X, SBS9535R,
SBS9538H, SBS9539E, SBS9541Y
Not Extended; De-Registering On 01 June 2014:
SBS9519M,
SBS9528L, SBS9534T, SBS9536M, SBS9537K, SBS9540A, SBS9542U
9537K is abit of a surprise though to be de-reg, given how 9518R
managed to be extended, when I thought 9537K shld have a lower
mileage by now (since it was perm Sv 6 as a S-shift somemore for
quite a long while since it went in..) compared to 9518R. That bus
likely has some terminal engine probs.. 
The other 6 in my opinion, are due to go because of high mileage
again. Just look at the high-demand svcs they've done
previously. 
Then again, there's still those VO3xs like 9524Y 9522C 9526S
9535R 9539E which would have similarly-high mileage and in my
opinion likely to go, but they still got extended.. Oh
well.