Canadian Oil Sands Announces Coker Turnaround

Canadian Oil Sands Announces Coker Turnaround 
CALGARY, ALBERTA -- (Marketwired) -- 06/10/13 -- Canadian Oil Sands
Limited ("COS") (TSX:COS) (OTCQX:COSWF) announced today that Syncrude
has commenced a turnaround on Coker 8-1.  
The turnaround was scheduled to occur in the second half of 2013 but
has been advanced due to reduced throughput following an outage on an
associated boiler unit, which underwent unplanned maintenance in May
as previously disclosed. The turnaround is anticipated to take
approximately 50 days.  
COS continues to expect production at Syncrude to be in the range of
100 to 110 million barrels for 2013 with no material impact on
operating costs. 
Forward-Looking Information Advisory 
In the interest of providing shareholders and potential investors
with information regarding Canadian Oil Sands Limited (the
"Corporation"), including management's assessment of the
Corporation's annual production and cost estimates, this press
release contains "forward-looking information" under applicable
securities law. Forward-looking statements are typically identified
by words such as "anticipate", "expect", "believe", "plan", "intend"
or similar words suggesting future outcomes. Forward-looking
statements in this press release include statements with respect to:
the anticipation that the turnaround of Coker 8-1 will take
approximately 50 days; the expectation that production at Syncrude
will be in the range of 100 million barrels to 110 million barrels
for 2013 and the expectation that the turnaround of Coker 8-1 will
have no material impact on operating costs.  
You are cautioned not to place undue reliance on forward-looking
statements, as there can be no assurance that the plans, intentions
or expectations upon which they are based will occur. By their
nature, forward-looking statements involve numerous assumptions,
known and unknown risks and uncertainties, both general and specific,
that contribute to the possibility that the predictions, forecasts,
projections and other forward-looking statements will not occur.
Although the Corporation believes that the expectations represented
by such forward-looking statements are reasonable and reflect the
current views of the Corporation with respect to future events, there
can be no assurance that such assumptions and expectations will prove
to be correct.  
The factors or assumptions on which the forward-looking information
is based include, but are not limited to: assumptions on labour
productivity and material availability at Syncrude as well as those
assumptions outlined in the Corporation's guidance document as posted
on the Corporation's website at, as subsequently
amended or replaced from time to time, including without limitation,
the assumptions as to production, operating expenses and oil prices.
Some of the risks and other factors which could cause actual results
to differ materially from current expectations expressed in this
press release include, but are not limited to: the occurrence of
unexpected events such as fires, blowouts, equipment failures and
other similar events, skilled labour shortages or material shortages
and the unsuccessful or untimely implementation of maintenance
You are cautioned that the foregoing list of important factors is not
exhaustive. The forward-looking statements contained in this press
release are expressly qualified by this cautionary statement.  
Canadian Oil Sands Limited 
Canadian Oil Sands is a pure investment opportunity in light, sweet
crude oil. Through our 36.74% interest in the Syncrude project, we
offer a solid, robust production stream of fully upgraded crude oil,
exposure to future crude oil prices, potential growth through
high-quality oil sands leases and an attractive dividend.  
For more information about Canadian Oil Sands please visit our web
site at 
Canadian Oil Sands Limited
Siren Fisekci
VP, Investor & Corporate Relations
(403) 218-6220 
Canadian Oil Sands Limited
Alison Trollope
Manager, Investor Relations
(403) 218-6220
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