How Many Oil Changes in a 55-Gallon Drum? Drum, Pail and Box Math for Shops
November 9, 2026 · RPS Distributors
Before moving from cases of quarts to bulk oil, most shops and fleet managers ask the same question: how many oil changes will I actually get out of a drum? Here is the simple math.
How much oil is in each container
| Container | Gallons | Quarts |
|---|---|---|
| 55-gallon drum | 55 | 220 |
| 16-gallon keg | 16 | 64 |
| 6-gallon box (bag-in-box) | 6 | 24 |
| 5-gallon pail | 5 | 20 |
| Case of 12 quarts | 3 | 12 |
Oil changes per container
These are approximate counts based on common oil capacities. Always check the capacity for the specific vehicle.
| Vehicle (typical capacity) | 55-gal drum | 6-gal box | 5-gal pail |
|---|---|---|---|
| Small car (4.5 qt) | about 48 | about 5 | about 4 |
| Car or SUV (5 qt) | 44 | about 4 | 4 |
| V8 pickup (7 qt) | about 31 | about 3 | about 2 |
| Diesel pickup (12–15 qt) | about 14–18 | about 1–2 | about 1 |
| Class 8 truck (about 40–44 qt) | about 5 | — | — |
Which size makes sense for you?
- 55-gallon drum — best for shops doing roughly 10 or more oil changes a week in the same grade, and for fleets. Lowest cost per quart, but you need a drum pump or bulk oil system and floor space.
- 6-gallon box or 5-gallon pail — good for lower-volume grades, smaller shops and mobile service. Easy to move and store.
- Cases of quarts — best for retail sales, slow-moving grades and top-offs.
Handling and storage tips
- A full 55-gallon drum of oil weighs roughly 400 to 450 pounds, so use a drum dolly or forklift.
- Store drums indoors or on their side under cover, so water cannot collect on the top and get pulled in past the bungs.
- Keep bungs tight and use a dedicated pump for each grade to avoid mixing.
- Use the oldest stock first.
Frequently asked questions
How many quarts are in a 55-gallon drum?
220 quarts (55 gallons x 4 quarts per gallon).
How many oil changes is a 55-gallon drum for a car?
About 44 oil changes for a car that takes 5 quarts.
Is buying oil by the drum cheaper?
Usually yes. Bulk drums cost less per quart than cases, as long as you use the grade before it sits too long.
Bulk motor oil we carry
Shop Mobil 1 0W-20 55-gallon drum, CAM2 Synavex dexos 0W-20 55-gallon drum, Mobil Delvac Extreme 15W-40 5-gallon pail and Goodyear dexos 0W-20 6-gallon box, or browse all motor oil.
Related guides: Buying Motor Oil in Bulk · Motor Oil Viscosity Explained
Request a wholesale quote or call 1-855-498-7509 (Mon–Fri, 6:00 am–5:30 pm). Free delivery in New Jersey on orders of $500 or more.