* WCS for May delivery in Hardisty, Alberta traded between $15.00 and $14.50 a barrel under WTI, according to brokerage CalRock, having traded between $14.55 and $14.00 a barrel under the U.S. benchmark on Monday.
* Canadian heavy crude reached its tightest differential
since last May in recent days, and is expected to remain
supported as oil sands projects enter turnaround season.
* Analysts also forecast a surprise supply cut from producer
group OPEC+ over the weekend may boost Canadian crude exports
from the U.S. Gulf Coast.
* Global oil prices were little changed in choppy trading as
investors weighed the OPEC+ production cuts against weak U.S.
and Chinese economic data that could suggest cooling oil
demand.
* The outright price of WCS was just under $66 a barrel.
(Reporting by Nia Williams)