Built to Keep You Moving
At Crystal Flash, we know today's engines need premium fuel to deliver the performance you're paying for. That's why we built Longevity Premium Diesel: a premium fuel that protects performance for the long haul.
Longevity is a proprietary blend that goes beyond standard #2 diesel. It is engineered to clean engines from the inside out, smooth out cold starts, and stretch your mileage further on every gallon.
Whether you're running a fleet, a farm, or a jobsite, Longevity is formulated to handle it. And because we deliver it ourselves, with employee-owners who live and work right here in Michigan, you get a fuel program that's as reliable as the people behind it.
Not all premium diesel is created equal
The Hidden Cost of Dirty Fuel Systems
Over time, deposits, corrosion, moisture, and fuel system wear can reduce performance, increase maintenance needs, and create costly downtime. While wear is inevitable, premature wear doesn't have to be. The right fuel helps protect against the problems that take equipment out of service and money out of your pocket.
The Solution
Longevity's 6-Point Fuel System Protection Package
Added Lubricity
Helps reduce fuel system wear and extend component life
All-Weather Protection
Keeps fuel flowing in extreme cold with enhanced wax control
Year-Round Moisture Control
Protects against water-related fuel issues and microbial growth
Cleaner Fuel Systems
Removes deposits and helps prevent new buildup to maintain peak engine performance
Fuel Stability
Reduces fuel breakdown, helping prevent filter plugging and extend filter life
Improved Combustion
Higher cetane levels for cleaner burns, fewer regens, and easier cold starts
Designed for Those Who Can’t Afford Downtime
Farms & Agricultural Operations
Tight margins and seasonal demand swings mean every hour of equipment downtime hurts. Longevity is available as off-road diesel fuel (dyed) for your tractors, combines, and grain dryers, helping them start clean and run longer between service intervals.
Fleets & Shops
Heavy workloads and aging equipment make fuel quality non-negotiable. Longevity's detergent and lubricity package extends injector life and reduces unscheduled shop visits — the kind of premium diesel fuel that pays for itself in saved labor hours.
Construction & Jobsites
When projects run on tight schedules, you can't lose a day to a clogged filter or a no-start. Longevity's cold-flow chemistry is built to handle Michigan jobsite conditions year-round, with off-road diesel fuel available for non-licensed equipment and clear diesel for your road-going trucks.
Pair Longevity with Our Service Programs
On-Site Fuel Delivery: fuel where you need it, when you need it.
Auto-Fill: automatic delivery with no monitoring required.
Digital Tank Monitoring: real-time visibility and intelligent ordering.
Fuel Contracting: lock in seasonal pricing with no hidden fees.
Fuel Management System: asset technology, fuel security and loss prevention.
Built For Every Season
3 Proprietary blends available in both clear (on-road) diesel and off-road (dyed) diesel
Gives you warm-weather performance and year-round fuel system protection.
KEY BENEFITS:
Improved injector cleanliness
Corrosion protection
Fuel stabilization
Added lubricity
Improved combustion performance
All the benefits of Longevity Summer,
plus proven protection against cold-weather operability issues.
KEY BENEFITS:
Anti-gel protection
Improved cold filter flow
Reduced wax-related plugging
Better winter reliability
Our highest-performance premium diesel blend, delivering the benefits of Longevity Winter plus enhanced combustion performance through a minimum 50 cetane rating.
KEY BENEFITS:
Easier cold starts
Smoother engine operation
Improved throttle response
A premium fuel, backed by people who own the company.
The Crystal Flash Difference
Crystal Flash has been delivering fuel across Michigan since 1932. Today, we're 100% employee-owned, which means every person you talk to, from the dispatcher to the driver, has a personal stake in your delivery showing up on time and on spec.
In a recent third-party study, Crystal Flash scored 98% in commercial customer satisfaction, well above industry competitors. We don't think that's a coincidence.
When you fuel up with Longevity, you're not just buying a better diesel. You're buying a better fuel program — one delivered by people who live in your community and answer the phone when you call.
Experience the CF difference
Ready to Put Longevity in Your Equipment?
Talk to a Crystal Flash representative about pricing, delivery options, and contract programs for Longevity Premium Diesel.
Are you an existing customer looking for support? If so, please contact our support team.