Dateline 2020-07-24, Argus Media:
Malaysia’s state-owned Petronas has started to run more lighter crude at its 270,000 b/d Malacca refinery since mid-July, resulting in an increase in off-specification bitumen supplies.
Malacca typically blends Saudi Arabian crude with fuel oil to produce pen 60/70 bitumen. It has raised the amount of light sweet crude it uses, together with its typical medium sour crude slate, to take advantage of more attractive prices for lighter grades. This has resulted in the refinery producing off-specification bitumen stocks of grade pen 80/100 instead of pen 60/70.
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Wata - Malaysian Oil and Gas Engineer 