The BMW 318 is one of the most popular models in the BMW 3 Series lineup, known for its balance of performance, efficiency, and reliability.
However, its engine oil requirements vary depending on generation, engine code, and model year.
In this guide, you will learn the correct BMW 318 engine oil type, oil capacity, oil change interval, and maintenance cost considerations across all major generations.
BMW 318 Engine Overview
The BMW 318 has been produced across multiple generations including E30, E36, E46, E90, and F30.
Each generation uses different engines ranging from naturally aspirated 4-cylinder petrol engines to modern turbocharged units.
- Body styles: Sedan, Touring, Compact
- Engine types: 1.8L – 2.0L inline-4
- Fuel type: Petrol / Diesel (depending on model)
- Focus: Efficiency, smooth performance, reliability
BMW 318 Engine Oil Type (All Generations)
The correct oil type depends heavily on engine generation. BMW has updated oil standards over time, especially for modern turbo engines.
Modern BMW 318 (E90–F30): SAE 0W-20 or 5W-30 Full Synthetic (BMW Longlife-04 / LL-14 / LL-17 approved)
- Older models (E30/E36): 10W-40 or 5W-30
- E46 generation: 5W-30 or 5W-40
- E90/E92: 5W-30 full synthetic
- F30 (modern): 0W-20 or 5W-30 low-viscosity synthetic
BMW 318 Engine Oil Capacity
BMW 318 Oil Change Interval
BMW engines use condition-based servicing, but real-world driving conditions often require earlier oil changes.
- Normal driving: Every 7,000 – 10,000 miles
- City driving / short trips: Every 5,000 – 7,000 miles
- High mileage engines: Every 5,000 miles recommended
- Time-based: At least once per year
BMW 318 Oil Change Cost
- Independent workshop: $70 – $120
- Authorized BMW service: $120 – $250
- DIY oil change: $40 – $80 (oil + filter only)
Common BMW 318 Engine Issues
Oil Consumption
Some BMW 318 engines may consume oil due to age, piston wear, or long service intervals.
Valve Cover Leaks
Common in E46 and E90 engines, causing oil smell and minor leaks.
Timing Chain Noise
Seen in some N43/N46 engines if oil maintenance is neglected.
Maintenance Tips for BMW 318
- Always use BMW-approved synthetic oil
- Do not exceed oil change intervals
- Check oil level regularly
- Replace oil filter every service
- Fix leaks early to avoid engine damage
Frequently Asked Questions (FAQ)
What oil does BMW 318 use?
Most modern BMW 318 engines use 5W-30 or 0W-20 full synthetic oil depending on generation.
How much oil does BMW 318 take?
Oil capacity ranges from 4.0 to 5.5 quarts depending on engine and model year.
How often should BMW 318 oil be changed?
Every 7,000–10,000 miles, or sooner under heavy driving conditions.
Is BMW 318 expensive to maintain?
Maintenance cost is moderate, but regular oil changes are essential to avoid costly repairs.
Final Thoughts
The BMW 318 is a reliable and efficient vehicle when properly maintained. Using the correct engine oil type, following service intervals, and staying on top of maintenance ensures long engine life and smooth performance across all generations.