2018 BMW 340i Oil Type & Capacity: 0W-20 (6.5 quarts)
The 2018 BMW 340i takes 0W-20 motor oil — 6.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
0W-20 — 6.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Automatic Trans | BMW Gasoline Engines. Oil viscosity of 0W-20, LL-14 FE+ | 6.50 QTS. | — | As of 7/2015 production, gasoline and diesel engine equipped vehicles have a new engine oil viscosity label (located on underside of engine compartment lid). These engines require a zero weight viscosity engine oil. Approximate capacity. |
| Standard Trans | BMW Gasoline Engines. Oil viscosity of 0W-20, LL-14 FE+ | 6.50 QTS. | — | As of 7/2015 production, gasoline and diesel engine equipped vehicles have a new engine oil viscosity label (located on underside of engine compartment lid). These engines require a zero weight viscosity engine oil. Approximate capacity. |
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More factory specs & repair guides for your 340i
🛞 2018 BMW 340i Tire Size & Pressure →🌧️ 2018 BMW 340i Wiper Blade Sizes →💡 2018 BMW 340i Light Bulb Sizes →📖 2018 BMW 340i Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
11.09 quarts (10.49 L) — Frostox HT-12 antifreeze and corrosion inhibitor. Top-up quantity of coolant in the event of repair with disconnected collant hoses. Observe the mixture ration and filling level. (2.11 qts).
Frequently asked questions
What type of oil does a 2018 BMW 340i take?
The 2018 BMW 340i takes 0W-20 motor oil (BMW Gasoline Engines. Oil viscosity of 0W-20, LL-14 FE+), per the factory service manual.
What is the oil capacity of a 2018 BMW 340i?
The 2018 BMW 340i oil capacity is 6.5 quarts with a filter change.
How often should I change the oil in my 2018 BMW 340i?
Most 2018 BMW 340i owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — BMW recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 BMW 340i?
Yes. 0W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 BMW 340i. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.