THAI, CAPRI and pipelinesThis has been discussed numerous times. I believe the current "book" is:
THAI is producing 10-14 degree API oil.
CAPRI is expected to boost the API to 20 degrees.
You need 22-23 degrees to be pipeline-able.
I would guess that less diluent is needed the closer you get to 22 degrees. "Normal bitumen" requires 1/4 barrel of dilbit or 1/2 barrel of syndilbit (synbit?) per piped barrel.