Sinclair Oil Scandal: Contaminated Gas Sold Across Colorado (2026)

Imagine filling up your car's tank, only to find out the gas you paid for is contaminated, causing your vehicle to stall or break down. This is exactly what happened to over 1,000 Colorado residents, and Sinclair Oil’s delayed response has sparked a major controversy. But here's where it gets even more troubling: despite learning about the issue early on January 8, Sinclair Oil failed to notify Colorado state regulators, brushing it off as a mere 'oversight.'

Investigative Reporter Brian Maass, known for uncovering critical stories, brings this alarming incident to light. Maass, a trusted veteran in journalism, invites you to share your story ideas at yourreporter@cbs.com. His latest exposé reveals how Sinclair’s delay in communication left regulators in the dark until consumer complaints flooded in, forcing the state to take action.

And this is the part most people miss: The contamination occurred when diesel fuel was mistakenly loaded into gasoline tankers at an HF Sinclair distribution terminal in Henderson. These faulty loads were then distributed to gas stations across the Front Range, leaving unsuspecting drivers with damaged vehicles and repair bills totaling thousands of dollars. Cher Haavind, Deputy Executive Director of the Colorado Department of Labor and Employment, expressed frustration, stating, 'We would've liked Sinclair to have informed us right when they identified the problem, rather than us discovering it through an influx of consumer complaints.'

Emails obtained by CBS Colorado under an open records request reveal a tense back-and-forth between Sinclair and state regulators. The state’s petroleum manager, Zach Hope, urged Sinclair to swiftly provide a list of affected gas stations, calling the situation 'unprecedented' and demanding an 'extraordinary response.' Yet, Sinclair took days to comply, citing confidentiality clauses with distributors. Is this a case of corporate negligence, or simply a logistical oversight?

Sinclair spokesperson Corinn Smith assured the public that an investigation is ongoing, but the state has given the company until January 30 to reveal the root cause. Meanwhile, Colorado is reevaluating its regulations, considering new notification requirements and potential violation fees to prevent such incidents in the future.

Here’s the controversial question: Should oil companies face stricter penalties for failing to promptly report contamination incidents? Or is this an isolated case that doesn’t warrant broader regulatory changes? Share your thoughts in the comments—this is a conversation that needs your voice.

Sinclair Oil Scandal: Contaminated Gas Sold Across Colorado (2026)
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