The Canadian dollar slipped against all of its major peers as crude oil, Canada’s biggest export, fell to nearly a four-month low and a reduction on western Canadian oil reached its highest level since January.

Bottlenecked pipelines in the Alberta province gave rise to worries that production will be hampered against competing grades, consequently weakening the currency from the strongest position it held versus the U.S. dollar in over a week. The news comes after a rise in the gauge of consumer consider had risen for the first time since September with improved outlooks on real estate prices and job security.

Western Canada Select is facing its biggest gap against West Texas Intermediate with the discount increasing to $40.75 per barrel, its biggest gap since 14th January. In December of last year the difference had hit record levels at $42.50 while the average for 2013 stands at $23.39.