Is diesel fuel hurting your L5P Duramax?

It often comes as a surprise that diesel fuel can be heavily contaminated—right from the pump. Despite paying $5.00 or more per gallon, diesel fuel is poorly filtered, poisoning your Duramax’s injection system with entrained air/air vapor, water, and debris. 



Without proper filtration, wear, and tear caused by fuel contamination can lead to premature injection system failure! Ready for more good news? Repairs can cost THOUSANDS—a single injector can run $1,500 or more, and that’s without installation! Few L5P Duramax problems are as expensive, or common, as injection system failures. 

Does your L5P Duramax need a fuel filter upgrade?

Despite the Silverado and Sierra’s reputation as affordable trucks, Heavy Duty models equipped with the L5P Duramax don’t typically come cheap. Understandably, many owners look for ways to protect their investments beyond routine maintenance schedules. 

That’s where we come in. Since 2003, our team at FASS Diesel Fuel Systems has been designing, testing, and manufacturing the leading diesel filtration solutions. Most recently, our engineering team released the Drop-In Series Fuel System for the 2017+ L5P Duramax. This 100% bolt-in, plug-and-play filtration system protects the L5P’s injection system from premature wear and failure—potentially saving owners thousands of dollars in repair costs. 

Our Drop-In Series Fuel System provides next-level protection by:

• Removing entrained and vapor
• Eliminating over 99% of the water found in diesel fuel (3rd-party proven)
• Filtering debris down to 2 Micron absolute
• Increasing the lubricity of fuel by at least 10%
• Retaining full functionality of the OEM water-in-fuel sensor 

Designed specifically for the L5P Duramax, our Drop-In Series Fuel Systems install in less than an hour, and require zero tuning or additional modifications.