How much oil does a 4 cylinder Cummins hold?
Most Cummins 4‑cylinder diesels hold about 20 to 24 quarts of oil when you include the filter, roughly 19 to 23 liters. The exact amount depends on the specific model and the oil filtration setup.
Diesel engines in the Cummins 4‑cylinder family (such as the 4B/4BT variants used in industrial, agricultural, and some light-truck applications) share a general range, but precise figures can vary. This article explains why capacities differ and how to verify the correct amount for your engine.
Why oil capacity varies across 4‑cylinder Cummins engines
Oil capacity is driven by engine displacement, lubrication system design, and whether the model uses a single oil filter or additional filtration/auxiliary hardware. The capacity figure is typically quoted as “oil capacity with filter.” Differences in filter size, oil cooler presence, and accessory plumbing can shift the total by a quart or two, so exact specs must be checked for each variant.
Typical ranges for common 4‑cylinder Cummins models
In practice, owners and technicians commonly see a broad range of about 20 to 24 quarts (roughly 19 to 23 liters) of oil when performing a full fill with a new filter on 4‑cylinder Cummins engines. Some configurations may sit closer to the low end (around 20–21 quarts) while others with larger or additional filtration may approach 23–24 quarts. Always reference the exact specification for your engine variant to ensure accuracy.
Practical tips for ensuring the right fill
Always consult your engine’s manual or a Cummins spec sheet for your exact model. When changing oil, pre-fill the new filter if possible, and verify oil level with the dipstick after a short idle and a brief run to circulating oil before rechecking.
Summary
For most Cummins 4‑cylinder engines, plan on roughly 21 quarts (about 5.25 gallons or 20 liters) as an average with a new filter, with a typical range spanning 20–24 quarts depending on the exact model and filtration setup. Always confirm the precise capacity from your engine’s official documentation to avoid under- or over-filling.
How much oil does a 4 cylinder Cummins take?
Between 9 and 10 quarts (oil pan.) The total system capacity is 11 quarts. How much coolant is used in a Cummins 3.9 engine?
How many liters is a Cummins 4BT?
A 4BT Cummins engine is a 3.9-liter diesel engine. The "4BT" in its name stands for a four-cylinder, "B" series engine that is turbocharged. Its displacement is also equivalent to 239 cubic inches.
- Liters: 3.9 L
- Cubic Inches: 239 cu in
- Configuration: Inline 4-cylinder
- Designation: The "4BT" stands for four-cylinder, "B" series, and "T" for turbocharged.
What is the lifespan of a 4BT engine?
300,000 to 500,000 miles
The 4BT engine is designed to be durable and long-lasting, with cast-iron construction for the engine block and cylinder head. With proper maintenance, the 4BT can easily run for 300,000 to 500,000 miles or more before requiring a major overhaul.
What oil does a 4BT Cummins take?
15W-40 is the most commonly used oil for Cummins B Series engines, providing excellent protection, viscosity stability, and heat resistance in normal operating temperatures.
