An AdBlue reorder point should reflect the fleet's recorded usage, replenishment lead time and chosen reserve. Waiting until a tank is almost empty leaves little room to coordinate delivery. A fixed AdBlue-to-diesel ratio is not a substitute for each fleet's records.
AI-generated illustration, not an actual Madin factory or delivery location.
A starting formula for frequently reviewed stock
Reorder point = average daily usage × replenishment lead time + safety stock. Use litres and a consistent day basis throughout. This is a starting model; variable demand or weekly stock reviews require a suitable coverage approach.
Illustrative example: a 320-litre trigger
A depot uses 40 litres per day, needs 5 days for new stock to arrive and become available, and selects a 120-litre reserve. The trigger is 40 × 5 + 120 = 320 litres. With 300 usable litres remaining, no outstanding purchase order and no separate stock reservation, replenishment should be reviewed. These figures illustrate the calculation; they are not a consumption standard or a Madin delivery commitment.
Four checks before placing an order
- Validate usage records. Separate actual issues from transfers between depots, and include zero-use days when calculating the average.
- Confirm the real delivery calendar. Include order handling, transport and receiving. Supplier working days may differ from fleet operating days.
- Reconcile usable stock, open orders and reserved quantities. Exclude quarantined stock and do not treat an unconfirmed or late delivery as available inventory.
- Choose the order quantity around upcoming demand, storage capacity, pack sizes and storage conditions. A reorder point is not the number of litres that must be purchased.
Frequently asked questions
Must safety stock always cover three days?
No. The 120-litre reserve is an assumption for this example. Set it using demand variability, delivery reliability and the disruption the business can tolerate.
When should the trigger be reviewed?
Review it after changes to routes, fleet size or suppliers. Weekly checks can help during a pilot. Record stock-outs and excess inventory so adjustments reflect evidence.
Planning fleet AdBlue deliveries? Send Madin the delivery location, recorded usage by period and storage format to discuss supply arrangements. Continue checking batch identity and the COA when stock arrives.
