Quick answer: Diesel thieves in British Columbia’s Creston Valley are specifically going after work trucks and their auxiliary “tidy tanks,” according to multiple news outlets covering the Creston RCMP’s October 2026 warning. In some cases they drill right through the steel tank to drain fuel. This article explains why diesel work trucks are the prime target and walks through a contractor-tested hardening plan that goes beyond the basic RCMP tips.
Why Are Diesel Work Trucks Being Targeted?
The Creston RCMP warning, reported by Castanet and the Creston Valley Advance, highlights a pattern seen across North America: diesel fuel in work trucks is easy money for thieves.
- High-value payload. A single saddle tank on a Class 5–7 chassis can hold 40–65 gallons of diesel. At current prices that is $150–$350 worth of fuel per truck.
- Tidy tanks double the take. Many contractors carry auxiliary transfer tanks in the bed. Thieves drain the saddle tank and the tidy tank in one stop.
- Exposed filler necks. On most service body and chassis cab trucks, the fuel cap sits behind an unlocked door—or completely exposed on the frame rail—giving a thief nothing to defeat but friction.
- Overnight jobsite parking. Work trucks often stay parked at unfenced rural sites, utility yards, and shopping-center staging areas with no cameras.
The RCMP confirmed that thieves are not just siphoning. Some are drilling into tanks, which means the owner loses the fuel and has to replace or weld the tank before the truck can roll again.
What the RCMP Recommends—and Where It Falls Short
Cpl. Brett Urano of the BC RCMP asked the community to take precautions (Today in BC). The detachment’s checklist is solid as a starting point:
- Park in secure, locked areas (garages, compounds).
- Choose well-lit parking spots.
- Install security cameras or motion-activated lighting.
- Use locking fuel caps and other anti-theft devices.
- Inspect tanks and vehicles regularly for tampering.
The gap is in step 4. A locking fuel cap still leaves the cap exposed where a thief can pry, twist, or cut it off with pliers in seconds. That is the single easiest upgrade to level up: replace the exposed cap with an armored fuel door that covers the entire filler area. We broke down the full RCMP checklist with fleet-specific commentary in our earlier post, Creston RCMP Warn of Rising Fuel Theft: How to Protect Your Work Trucks.
A Contractor’s Diesel Theft Hardening Plan
If you run trucks in the field—service bodies, flatbeds, dump trucks, utility vans—here is a layered approach built on the RCMP advice and real-world fleet feedback.
Layer 1 — Lock the Filler
An armored locking fuel door bolts over the factory fuel door opening and covers the cap completely. No drilling into the chassis, no wiring, and it installs in minutes. If your truck also has an exposed DEF filler, lock that too—DEF theft and contamination are rising alongside diesel theft. See our DEF cap cover guide.
Layer 2 — Park Smart
Back trucks in so the fuel side faces a wall, building, or another truck. Do not line up fuel-side-out along a fence. If you stage trucks at a jobsite overnight, cluster them bumper-to-bumper and put the most visible truck on the outside.
Layer 3 — Light and Watch
Solar-powered motion lights are under $40 and need no wiring. Aim cameras at fuel sides and tidy tanks, not just the gate. Even a dummy camera housing with a blinking LED deters casual thieves.
Layer 4 — Secure the Tidy Tank
Lock the nozzle and hand-pump on any bed-mounted transfer tank. If you can, pull the tidy tank off the truck at night and lock it in a compound.
Layer 5 — Morning Walk-Around
Check the fuel gauge against where it was yesterday. Look for pry marks around the fuel door, stains on the ground, and fresh scratches or wet spots on the underside of the tank. Use our fleet savings calculator to put a dollar figure on even small losses across your fleet.
Key Takeaways
- Diesel work trucks are the primary target because they carry high-value fuel and are often parked at exposed jobsites.
- Thieves in the Creston Valley are drilling into tanks, not just siphoning—so a locked filler alone is not enough, but it stops the most common attack.
- Layer your defenses: locked filler + smart parking + lights/cameras + tidy-tank security + daily checks.
- A locking fuel door covers the entire filler area, removing the exposed cap that thieves attack first.
Which Work Trucks Fit?
The Work Truck Fuel Vault fits most commercial chassis, service bodies, and cutaway vans. Use Find My Fit™ to check your exact year, make, and model, or browse by upfitter:
- Knapheide service bodies
- Reading service bodies
- Royal Truck Body
- Stahl service bodies
- Ford F-550 | RAM 5500 | Freightliner M2
Frequently Asked Questions
Why do thieves target diesel work trucks specifically?
Diesel work trucks carry large saddle tanks (40–65 gallons) and often auxiliary tidy tanks as well, making them high-value targets. Many are parked overnight at jobsites or open lots with no cameras, and the fuel cap is usually exposed or behind an unlocked door.
Can thieves really drill into a fuel tank?
Yes. The Creston RCMP confirmed that some thieves are drilling into tanks to drain them, which means the owner loses the fuel and must repair or replace the tank before the truck can run again.
What is a tidy tank and why is it a theft risk?
A tidy tank (also called a transfer tank) is an auxiliary fuel storage tank mounted in a truck bed for refueling equipment in the field. Thieves target them because they sit in the open, often hold 50–100 gallons, and their nozzles and hand-pumps are rarely locked.
How does a locking fuel door differ from a locking fuel cap?
A locking fuel cap threads onto the filler neck but remains exposed where a thief can pry, twist, or cut it off. A locking fuel door covers the entire filler area with an armored door, so there is no cap to attack.
What is the best layered approach to prevent diesel theft from a work truck?
Lock the filler with an armored fuel door, park with the fuel side against a wall or another truck, add motion-activated lighting and cameras aimed at the fuel side, secure the tidy tank nozzle, and do a morning walk-around to check fuel levels and look for tampering.
Stop Diesel Theft at the Filler
The Work Truck Fuel Vault is a patent-pending armored locking fuel door that bolts over the factory fuel door opening. It installs in minutes with hand tools, needs no drilling or wiring, and does not touch the fuel system. Security screws are included with every door at no extra cost.
The WTFV-1001S (Small) is $159.95 and the WTFV-1002L (Large) is $169.95; a 2-pack is $309.95. Shipping is calculated by UPS at checkout. Every door carries a limited lifetime warranty and a 30-day money-back guarantee.
Check your truck at Find My Fit™, browse all products, or call 941-541-0089 to talk to a real person in Sarasota, Florida.
Sources: Castanet, “Creston RCMP warn of rising fuel and diesel thefts as thieves target work trucks,” October 29, 2026; Today in BC, “Creston RCMP warn of increasing fuel thefts,” October 30, 2026; Creston Valley Advance, “Creston RCMP warn of increasing fuel thefts,” October 30, 2026.