Originally Posted by
muffin1313
Thanks for the info guys.
My plans changed and i'm flying out of T4 on MH on the inbound, so going to check out the MH lounge.
Now I have a 4 hour layover arriving in T4 and departing T5

If you are arriving at T4 you won't be able to access the MH lounge as arriving and departing passengers are segregated and without a BP for a departing flight you wouldn't be able to get back in.