What is the Best Long Padlock to Lock My Diesel Tank?

Diesel bowsers and static fuel tanks are frequently left outdoors and are often in remote or hard-to-monitor locations. This makes them a common target for theft. The padlock you choose needs to be weather-resistant, secure, and correctly sized so it fits the tank fittings without getting in the way.

Shackle Size and Fit

Most diesel tank locking points require:

• Inner shackle height: 40mm to 90mm

• Inner shackle width: at least 20mm

• Shackle diameter: small enough to pass through the 18mm fitting hole
  A shackle that is too long can rattle, snag or be leveraged. Too short and it will not fit properly. Measuring your fitting before ordering is essential.

Weather Resistance Matters

Diesel tanks are often used on farms, construction sites, haulage yards, and utility sites. They may be exposed to rain, frost, mud and sometimes salt if moved around the coastline. A padlock that is not designed for outdoor use can corrode quickly and seize.

Recommended Padlocks

Abus Eterna 41/50HB50 Laminated Padlock

A robust weather-resistant laminated steel padlock, treated using Abus’ Eterna corrosion protection process. This model offers:

• Strong, hardened shackle

• Long shackle for practical fit

• Reliable performance outdoors in all seasons
  It is suitable for everyday diesel tank security and is available keyed differ or keyed alike.

Abus Granit 37/55HB50 Long Shackle High Security Padlock

For higher theft-risk sites or fuel storage on the move:

• CEN 4 high security rating

• Full weather protection including marine environments

• Removable shackle design makes fitting easier inside tight spaces
  This padlock is ideal for mobile diesel bowsers, haulage yards, remote agriculture and plant equipment sites.

Keying Options

Both padlocks can be supplied as:

• Keyed Differ (each lock is unique)

• Keyed Alike (one key opens all locks in your fuel storage area)
  Keyed alike is recommended for sites with multiple tanks or several operators.