Summary
Highlights
Speedway, visually appealing, is another aggregator of mixed local fuel suppliers. Long-term use results in heavy carbon buildup on intake valves, reducing performance and fuel economy as the engine works harder. Speedway's fuel tests low on detergents and has significant issues with water infiltration, suggesting poor tank maintenance. It is not top-tier certified.
While popular for travelers, Love's often has issues with fuel quality and storage tank hygiene. They have been flagged for contamination, including cloudy fuel with visible sediment and microbial growth. This sludge clogs fuel filters and injectors. Love's is not top-tier certified, making their gasoline quality a gamble for modern engines.
The revived Amoco brand is essentially BP regular gas, not the premium product it once was. Its regular blends are criticized for weak detergent levels, leading to rapid carbon buildup in direct injection engines and potentially low-speed pre-ignition (LSPI). Older stations may have outdated tanks prone to moisture leaks, further degrading fuel quality.
Pilot Flying J, a truck stop chain with a history of corporate scandals, shows a lack of concern for unleaded gasoline quality. Customers report poor power and knocking, suggesting inaccurate octane ratings or degraded fuel. Fuel samples often test high for water and sediment, indicating neglected tank maintenance and filter changes.
Despite its motorsport image, Sunoco's regular grade gasoline is a major offender for deposit formation and knock issues, with base fuel often falling short on detergents. In 2016, Sunoco faced fines for selling fuel that didn't meet clean air standards, leaving gritty carbon residue that wears down piston rings. Its racing reputation does not extend to its street-grade fuel.
The absolute worst is unbranded distributors—"Frankenstein Fuels"—who blend waste products and hazardous materials with gasoline. These toxic mixtures destroy engines, causing melted catalytic converters, seized fuel pumps, and corroded injectors. These stations often look dilapidated and offer suspiciously low prices, making them a significant risk to your vehicle.
Chevron's Techron is a patented polyether amine-based detergent that acts as a powerful solvent, safely scrubbing carbon from intake valves and fuel injectors. It is top-tier certified and often exceeds these standards, preventing common engine problems and keeping internal components almost new, even after high mileage.
Shell's V-Power and nitrogen-enriched gasolines use a nitrogen-enriched cleaning system that cleans and creates a protective barrier on engine surfaces, preventing carbon buildup. Vehicles running on Shell fuel consistently show cleaner combustion chambers and smoother idling. Strict franchise standards ensure excellent consistency and tank maintenance.
ExxonMobil's Synergy gasoline blend applies its advanced additive package to all grades, including regular unleaded, providing cleaning benefits without requiring premium gas. Their focus on corrosion inhibitors protects fuel pumps and lines, ensuring spotless injectors and crisp throttle response in older engines.
Costco is top-tier certified, adding more detergent than federally required. Their high turnover rate ensures fresh fuel, preventing staleness and moisture buildup. Rigorous tank maintenance and frequent filter changes provide premium quality, high-detergent fuel at a wholesale price, offering exceptional value.
BP's premium Invigorate blend is highly effective, not just cleaning but actively removing existing carbon buildup from cheaper fuels. It keeps engines up to 60% cleaner than minimum-standard fuels. Switching to BP has been shown to smooth out rough idling and restore performance, making it ideal for long-term engine protection.
Saving money on cheap, unbranded gas is a false economy, deferring costs that result in expensive repairs for fuel injectors, catalytic converters, and reduced fuel economy. Treating your engine with respect by choosing quality fuel ensures longevity and optimal performance for hundreds of thousands of miles.
Over 70% of fuel sold in the US lacks sufficient detergents, slowly damaging engines. This results in carbon buildup, clogged injectors, and failed fuel pumps, often surprising car owners who maintain other aspects of their vehicles. The video will expose 11 harmful gasoline brands and recommend 5 beneficial ones.
Safeway gas, despite grocery discounts, is notorious for low detergent levels, leading to rough idling, sluggish response, and phantom check engine lights. This fuel causes carbon deposits on injector tips and intake valves, similar to thick tar, fouling spark plugs and making the engine struggle to breathe. Safeway is not top-tier certified, prioritizing cost-cutting over chemical quality.
7-Eleven does not refine its own fuel but buys from the cheapest spot market distributor, leading to inconsistent fuel quality. This fluctuation causes engines to suffer, with reports of knocking, pinging, rough idling, and even water contamination due to old, neglected underground tanks. Their varying management often results in selling off-spec fuel.
Sam's Club emphasizes volume over quality, sourcing generic fuel that barely meets legal requirements. Modern direct injection engines are sensitive to this minimum quality. Issues include cloudy, stale fuel with sediment and moisture in storage tanks. Sam's Club is not top-tier certified, lacking essential additive packages, which can lead to future reliability issues.
Circle K, despite its widespread presence, sources fuel from the lowest bidder, offering inconsistent quality. Regular use leads to gumming, a varnish-like residue on fuel systems and injectors, causing misfires and heavy carbon deposits. In 2020, multiple Circle K locations sold water-contaminated fuel, damaging many vehicles due to inadequate safeguards.
Murphy USA's business model prioritizes being the cheapest, sacrificing quality. Detergents are the first to be cut, leading to early fuel injector failures. Their fuel detergent levels often fall below recommended top-tier standards, and ethanol blending can be inconsistent, causing check engine lights. Instances of bad batches led to cars stalling, revealing poor supplier management.