--- title: How to Protect Valuable Petroleum, Oil, and Lubricant Products from Theft description: Scully’s Scul-Lock cap is one of the most difficult-to-tamper-with theft-prevention tools available and will protect your product. image: https://marketing.scully.com/hubfs/scul-lock-product.jpg --- - [Products](http://scully.com/products/) - [Overfill Prevention Controllers](https://scully.com/product-category/overfill-prevention-controllers/) - Loading Rack / Fill Stand / Gantry - [Auto-Detect Rack Controller - Intellitrol](https://scully.com/product/intellitrol-overfill-grounding-vehicle-identification-monitor/) - [Multi-Point Controller – ST-35](https://scully.com/product/st-35-overfill-prevention-monitor-2/) - [Single-Point Controller – ST-15](https://scully.com/product/st-15-overfill-prevention-monitor/) - Tank Truck - [Onboard Controller – IntelliCheck®3](https://scully.com/product/intellicheck-3/) - Storage Tank - [Point Level Controls – ST-15-WX](https://scully.com/product/st-15-wx-overfill-prevention-and-liquid-detection-monitor/) - [Overfill Prevention Sensors](https://scully.com/product-category/overfill-prevention-sensors/) - Tank Truck - [Two-Wire Optic Sensor](https://scully.com/product/scul-sense-two-wire-optic-sensor-for-overfill-prevention/) - [Five-Wire Optic Sensor](https://scully.com/product/scul-sense-five-wire-optic-sensor-for-overfill-prevention/) - [Stainless Steel Chemical Sensor](https://scully.com/product/scul-sense-stainless-steel-high-pressure-chemical-sensor/) - [Retain Optic (Bottom) Sensor](https://scully.com/product/retained-product-sensor-for-compartment-empty-detection/) - [Toolless Sensor – Scully Connect™ Plus](https://scully.com/product/scully-connect/) - Storage Tank - [Two-Wire Optic Sensor For Storage Tanks](https://scully.com/product/two-wire-optic-sensor/) - [Thermistor Sensor](https://scully.com/product/thermistor-sensor/) - [Single Sensor Mounting Holder](https://scully.com/product/sp-o-single-sensor-mounting-holder/) - [Multi-Sensor Mounting Holder For Storage Tanks](https://scully.com/product/multi-sensor-mounting-holder/) - Rail Car - [Portable Liquid Level (Cane) Sensor](https://scully.com/product/portable-liquid-level-sensors/) - [Overfill Prevention Plugs & Cables](https://scully.com/product-category/overfill-prevention-plugs-cables/) - Loading Rack / Fill Stand / Gantry - [Plugs, Cables & Junction Box](https://scully.com/product/plug-cable-assemblies-wsculcon-series-junction-box/) - [Pull-Away Plug & Cable](https://scully.com/product/scully-pull-away-socket/) - [Break-Away Plug & Cable – Scul-Guard™](https://scully.com/product/break-away-cables/) - [Overfill Prevention Sockets](https://scully.com/product-category/overfill-prevention-sockets/) - Tank Truck - [Single & Dual Sockets (DuoCept®)](https://scully.com/product/five-wire-and-two-wire-single-sockets/) - [Two-Wire Optic Socket – UK](https://scully.com/product/scully-two-wire-optic-socket/) - [Overfill Prevention Testers & Accessories](https://scully.com/product-category/overfill-prevention-testers-accessories/) - Loading Rack / Fill Stand / Gantry - [Scully Rack Tester](https://scully.com/product/universal-loading-rack-tester/) - Tank Truck - [Universal Truck Tester](https://scully.com/product/universal-truck-tester-overfill-prevention-grounding-system-diagnostics/) - [Static Bond & Ground Proving Equipment](https://scully.com/product-category/static-bond-ground-proving-equipment/) - Loading Rack / Fill Stand / Gantry - [Static Ground Proving Controller ST-47 Groundhog™](https://scully.com/product/st-47-groundhog-static-grounding-monitor/) - Tank Truck Accessories - [Scully Ground Bolt & Ground Ball](https://scully.com/product/ground-bolt-ground-ball/) - [Static Ground Proving Plugs, Cables, & Clamps](https://scully.com/product-category/static-bond-ground-proving-plugs-cables-clamps/) - Loading Rack / Fill Stand / Gantry - [Plugs & Cables W/ SCULCON Junction Box](https://scully.com/product/ground-proving-plug-and-cable-assembly-with-sculcon-junction-box/) - [Clamps & Cables W/ SCULCON Junction Box](https://scully.com/product/ground-verification-clamp-and-cable-unit/) - [Deadman Handle & Cable](https://scully.com/product/deadman/) - [Vehicle Identification System](https://scully.com/product-category/vehicle-identification-system/) - Loading Rack /Fill Stand / Gantry - [Auto-Detect Rack Controller - Intellitrol®2 W/ Vehicle Identification Option](https://scully.com/product/intellitrol-overfill-grounding-vehicle-identification-monitor/) - Tank Truck - [Truck ID Module – T.I.M ®](https://scully.com/product/t-i-m-truck-identification-module-2/) - [Delivery Nozzles, Swivels & Accessories](https://scully.com/product-category/delivery-nozzles-swivels-accessories/) - [Ball-Valve Delivery Nozzle Sculflow®](https://scully.com/product/sculflow-nozzle/) - [High Volume Delivery Nozzle – Super Nozzle](https://scully.com/product/super-nozzle/) - [Hose Swivels & Sight Glass](https://scully.com/product/hose-swivels/) - [Spouts](https://scully.com/product/spouts/) - [Portable Fill Device – Ventafil®](https://scully.com/product/ventafil-portable-fill-device-2/) - [Flow Controls & Actuators](https://scully.com/product-category/flow-controls-actuators/) - [Flow Switch & Angle Check Valve Mark IV®](https://scully.com/product/mark-iv-flow-switch-angle-check-valve/) - [Angle Check Valve – Mark IV®](https://scully.com/product/flow-switch-angle-check-valve-pumping-flow-control/) - [Electric & Air Throttle Actuator Sculmatic®](https://scully.com/product/sculmatic-12-volt-electricair-throttle-actuators/) - [Fill Alarms & Level Gauges](https://scully.com/product-category/fill-alarms-level-gauges/) - [Tank Level Gauges – Econ-O-Gage ®](https://scully.com/product/econ-o-gage-swing-arm-gauges/) - [Tank Fill Audible Indicators – Ventalarm®](https://scully.com/product/ventalarm-tank-fill-signals/) - [Tank Level & Alarm Gauges – Ventalarm®](https://scully.com/product/ventalarm-gauges/) - [Tank Level Gauges – Golden Gallon Gauge®](https://scully.com/product/golden-gallon-gauge/) - [Tank Level Gauges – Twis-Lok®](https://scully.com/product/twis-lok-gauge/) - [Enhanced Tank Level Gauges – Snorkel®](https://scully.com/product/snorkel-gauge/) - [Portable Water Detector](https://scully.com/product/portable-water-level-sensor/) - [Vent Pipe Fill Signal – Whistler®](https://scully.com/product/whistler-fill-signal/) - [Tight Fill Adaptors & Caps](https://scully.com/product-category/tight-fill-adaptors-caps/) - [Unifil® Adaptors, Caps And Nozzle Connectors](https://scully.com/product/unifil-tightfill-connection-system/) - [Unifil® Delivery System Accessories](https://scully.com/product/scully-unifil-tight-fill-delivery-system-accessories/) - [Scul-Lock™️ – Locking Cap](https://scully.com/product/scul-lock-locking-cap/) - [Markets](http://scully.com/markets/) - [Petroleum](https://scully.com/market/petroleum/) - [Railcar](https://scully.com/market/railcar/) - [Aviation](https://scully.com/market/aviation/) - [Chemical](https://scully.com/market/chemical/) - [Government/Military](https://scully.com/market/government-military/) - [Lube Oil Delivery](https://scully.com/market/lube-oil-delivery/) - [Food & Beverages](https://scully.com/market/food-beverage/) - [Heating Oil Delivery](https://scully.com/market/heating-oil-delivery/) - 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[Join Our Team](https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=1fc7810b-b7dd-4127-91fa-b24e50bb5b0e&ccId=19000101_000001&lang=en_US) Search for: [Customer Portal](https://portal.scully.com/IPFSitePages/Main.aspx)   [![scully-logo-big](https://marketing.scully.com/hubfs/scully-logo-big.svg)](http://scully.com) - [Products](http://scully.com/products/) - [Overfill Prevention Controllers](https://scully.com/product-category/overfill-prevention-controllers/) - Loading Rack / Fill Stand / Gantry - [Auto-Detect Rack Controller - Intellitrol](https://scully.com/product/intellitrol-overfill-grounding-vehicle-identification-monitor/) - [Multi-Point Controller – ST-35](https://scully.com/product/st-35-overfill-prevention-monitor-2/) - [Single-Point Controller – ST-15](https://scully.com/product/st-15-overfill-prevention-monitor/) - Tank Truck - [Onboard Controller – IntelliCheck®3](https://scully.com/product/intellicheck-3/) - Storage Tank - [Point Level Controls – ST-15-WX](https://scully.com/product/st-15-wx-overfill-prevention-and-liquid-detection-monitor/) - [Overfill Prevention Sensors](https://scully.com/product-category/overfill-prevention-sensors/) - Tank Truck - [Two-Wire Optic Sensor](https://scully.com/product/scul-sense-two-wire-optic-sensor-for-overfill-prevention/) - [Five-Wire Optic Sensor](https://scully.com/product/scul-sense-five-wire-optic-sensor-for-overfill-prevention/) - [Stainless Steel Chemical Sensor](https://scully.com/product/scul-sense-stainless-steel-high-pressure-chemical-sensor/) - [Retain Optic (Bottom) Sensor](https://scully.com/product/retained-product-sensor-for-compartment-empty-detection/) - [Toolless Sensor – Scully Connect™ Plus](https://scully.com/product/scully-connect/) - Storage Tank - [Two-Wire Optic Sensor For Storage Tanks](https://scully.com/product/two-wire-optic-sensor/) - [Thermistor Sensor](https://scully.com/product/thermistor-sensor/) - [Single Sensor Mounting Holder](https://scully.com/product/sp-o-single-sensor-mounting-holder/) - [Multi-Sensor Mounting Holder For Storage Tanks](https://scully.com/product/multi-sensor-mounting-holder/) - Rail Car - [Portable Liquid Level (Cane) Sensor](https://scully.com/product/portable-liquid-level-sensors/) - [Overfill Prevention Plugs & Cables](https://scully.com/product-category/overfill-prevention-plugs-cables/) - Loading Rack / Fill Stand / Gantry - [Plugs, Cables & Junction Box](https://scully.com/product/plug-cable-assemblies-wsculcon-series-junction-box/) - [Pull-Away Plug & Cable](https://scully.com/product/scully-pull-away-socket/) - [Break-Away Plug & Cable – Scul-Guard™](https://scully.com/product/break-away-cables/) - [Overfill Prevention Sockets](https://scully.com/product-category/overfill-prevention-sockets/) - Tank Truck - [Single & Dual Sockets (DuoCept®)](https://scully.com/product/five-wire-and-two-wire-single-sockets/) - [Two-Wire Optic Socket – UK](https://scully.com/product/scully-two-wire-optic-socket/) - [Overfill Prevention Testers & Accessories](https://scully.com/product-category/overfill-prevention-testers-accessories/) - Loading Rack / Fill Stand / Gantry - [Scully Rack Tester](https://scully.com/product/universal-loading-rack-tester/) - Tank Truck - [Universal Truck Tester](https://scully.com/product/universal-truck-tester-overfill-prevention-grounding-system-diagnostics/) - [Static Bond & Ground Proving Equipment](https://scully.com/product-category/static-bond-ground-proving-equipment/) - Loading Rack / Fill Stand / Gantry - [Static Ground Proving Controller ST-47 Groundhog™](https://scully.com/product/st-47-groundhog-static-grounding-monitor/) - Tank Truck Accessories - [Scully Ground Bolt & Ground Ball](https://scully.com/product/ground-bolt-ground-ball/) - [Static Ground Proving Plugs, Cables, & Clamps](https://scully.com/product-category/static-bond-ground-proving-plugs-cables-clamps/) - Loading Rack / Fill Stand / Gantry - [Plugs & Cables W/ SCULCON Junction Box](https://scully.com/product/ground-proving-plug-and-cable-assembly-with-sculcon-junction-box/) - [Clamps & Cables W/ SCULCON Junction Box](https://scully.com/product/ground-verification-clamp-and-cable-unit/) - [Deadman Handle & Cable](https://scully.com/product/deadman/) - [Vehicle Identification System](https://scully.com/product-category/vehicle-identification-system/) - Loading Rack /Fill Stand / Gantry - [Auto-Detect Rack Controller - Intellitrol®2 W/ Vehicle Identification Option](https://scully.com/product/intellitrol-overfill-grounding-vehicle-identification-monitor/) - Tank Truck - [Truck ID Module – T.I.M ®](https://scully.com/product/t-i-m-truck-identification-module-2/) - [Delivery Nozzles, Swivels & Accessories](https://scully.com/product-category/delivery-nozzles-swivels-accessories/) - [Ball-Valve Delivery Nozzle Sculflow®](https://scully.com/product/sculflow-nozzle/) - [High Volume Delivery Nozzle – Super Nozzle](https://scully.com/product/super-nozzle/) - [Hose Swivels & Sight Glass](https://scully.com/product/hose-swivels/) - [Spouts](https://scully.com/product/spouts/) - [Portable Fill Device – Ventafil®](https://scully.com/product/ventafil-portable-fill-device-2/) - [Flow Controls & Actuators](https://scully.com/product-category/flow-controls-actuators/) - [Flow Switch & Angle Check Valve Mark IV®](https://scully.com/product/mark-iv-flow-switch-angle-check-valve/) - [Angle Check Valve – Mark IV®](https://scully.com/product/flow-switch-angle-check-valve-pumping-flow-control/) - [Electric & Air Throttle Actuator Sculmatic®](https://scully.com/product/sculmatic-12-volt-electricair-throttle-actuators/) - [Fill Alarms & Level Gauges](https://scully.com/product-category/fill-alarms-level-gauges/) - [Tank Level Gauges – Econ-O-Gage ®](https://scully.com/product/econ-o-gage-swing-arm-gauges/) - [Tank Fill Audible Indicators – Ventalarm®](https://scully.com/product/ventalarm-tank-fill-signals/) - [Tank Level & Alarm Gauges – Ventalarm®](https://scully.com/product/ventalarm-gauges/) - [Tank Level Gauges – Golden Gallon Gauge®](https://scully.com/product/golden-gallon-gauge/) - [Tank Level Gauges – Twis-Lok®](https://scully.com/product/twis-lok-gauge/) - [Enhanced Tank Level Gauges – Snorkel®](https://scully.com/product/snorkel-gauge/) - [Portable Water Detector](https://scully.com/product/portable-water-level-sensor/) - [Vent Pipe Fill Signal – Whistler®](https://scully.com/product/whistler-fill-signal/) - [Tight Fill Adaptors & Caps](https://scully.com/product-category/tight-fill-adaptors-caps/) - [Unifil® Adaptors, Caps And Nozzle Connectors](https://scully.com/product/unifil-tightfill-connection-system/) - [Unifil® Delivery System Accessories](https://scully.com/product/scully-unifil-tight-fill-delivery-system-accessories/) - [Scul-Lock™️ – Locking Cap](https://scully.com/product/scul-lock-locking-cap/) - [Markets](http://scully.com/markets/) - [Petroleum](https://scully.com/market/petroleum/) - [Railcar](https://scully.com/market/railcar/) - [Aviation](https://scully.com/market/aviation/) - [Chemical](https://scully.com/market/chemical/) - [Government/Military](https://scully.com/market/government-military/) - [Lube Oil Delivery](https://scully.com/market/lube-oil-delivery/) - [Food & Beverages](https://scully.com/market/food-beverage/) - [Heating Oil Delivery](https://scully.com/market/heating-oil-delivery/) - 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[Join Our Team](https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=1fc7810b-b7dd-4127-91fa-b24e50bb5b0e&ccId=19000101_000001&lang=en_US) [Contact Us](https://scully.com/contact-us/) # Scully Signal Blog [All posts](https://marketing.scully.com/scully-blog/all) # How to Protect Valuable Petroleum, Oil, and Lubricant Products from Theft Posted by [Scully Signal](https://marketing.scully.com/scully-blog/author/scully-signal) on Oct 14, 2022 2:22:24 PM ## **Robust, Durable Locking Cap Keeps Thieves at Bay from Tanks** With petroleum and oil products commanding high prices, the risk of theft is rising in the U.S. Tanks using a tight-fill connection holding diesel, heating oil, and lube may be installed away from human supervision—making them easy targets for theft. An average size tank holding 275 gallons of heating oil at an average price of $5.81 per gallon (per Mass.gov November 18, 2022), is worth $1,597 of oil that can be vulnerable to thieves when left unprotected. Theft, which has primarily been a problem in emerging nations, has become more prevalent in U.S. markets. One of the easiest ways to protect your product is to lock your tank to make it difficult for thieves to access valuable commodities. Scully’s Scul-Lock cap is one of the most difficult-to-tamper with theft-prevention tools available.![scul-lock-product](https://marketing.scully.com/hs-fs/hubfs/scul-lock-product.jpg?width=364&height=327&name=scul-lock-product.jpg) Fuel oil delivery operators worldwide have come to rely upon our advanced solutions—from fuel oil delivery nozzles to whistles and gauges and overfill prevention and grounding verification systems—to keep their operations flowing smoothly and safely. Our robust Scul-Lock cap has a cast locking mechanism that is harder to break through than any other cap and lock on the market. The mechanism can withstand a hard tap on the cap assembly, which prevents it from easily opening, unlike competitors’ less robust, more vulnerable products. **Rugged, Made-in-the-U.S.A. Locking Cap** Made in the U.S.A. (minimizing delivery risks), our Scul-Lock locking cap features:  - A custom-opening handle that cannot be easily duplicated - Custom-manufactured aluminum label disks for co-branding or contact information - Rugged design that withstands tampering to the cap assembly - Cast locking mechanism that is stronger, and more durable and secure than lesser products sold on the market Reduce the risk of losing valuable petroleum and oil commodities to theft. Lock those tanker trucks and ensure your assets are less vulnerable today! [Contact us](https://www.opticallock.com/contact-us/)for more information on how we can help you keep thieves at bay. **About Us** Scully is vertically integrated with in-house engineering and manufacturing, including a machine shop, diecast, electronic, and mechanical assembly, as well as design and test engineering capabilities. We have access to components and plenty of production capacity. Scully’s core systems include a wide range of equipment for liquid detection and delivery, including—but not limited to—overfull prevention, static ground proving, retained product monitoring, and oil delivery efficiency equipment. You can depend on us for safe, dependable products and service. [Contact us](https://scully.com/customer-service-sales-and-applications-support/) to see how we can help! **Topics:** [Scul-Lock](https://marketing.scully.com/scully-blog/topic/scul-lock) [![scully-logo-big](https://marketing.scully.com/hubfs/scully-logo-big.svg "scully-logo-big")](https://scully.com/)   **Scully Signal Company World Headquarters** 70 Industrial Way Wilmington, MA 01887-3479, USA Company - [Company Profile](https://scully.com/company-profile/) - [President’s Message](https://scully.com/presidents-message/) - [Our Quality Promise](https://scully.com/company-profile/our-quality-promise/) - [Associations](https://scully.com/company-profile/associations/) - [Dynacheck®](https://scully.com/dynacheck/) Additional Resources - [Join Our Team](https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=1fc7810b-b7dd-4127-91fa-b24e50bb5b0e&ccId=19000101_000001&lang=en_US) - [Insights](https://scully.com/news-insights/insights/) - [Documentation & Manuals](https://scully.com/resources/documentation-manuals/) - [Technical Support](https://scully.com/contact-us/technical-support/) - [Contact Us](https://scully.com/contact-us/) [Login to Customer Portal](https://portal.scully.com/IPFSitePages/Main.aspx) © 2023 Scully - [Privacy Policy](https://scully.com/privacy-policy/) - [Terms & Conditions](https://scully.com/terms-and-conditions) - [Cookie Policy](https://scully.com/cookie-policy) - [Conflicts Mineral Policy](https://149855482.v2.pressablecdn.com/wp-content/uploads/CMS_01.pdf) - ![iso-logo-dark](https://marketing.scully.com/hubfs/iso-logo-dark.svg) - ![made-in-dark](https://marketing.scully.com/hubfs/made-in-dark.svg)