Which Oil Filter is Considered the Best?
Choosing the best oil filter isn’t just about picking a popular brand — it’s about protecting your engine’s longevity, maintaining oil flow, and ensuring your vehicle performs reliably in all conditions. Whether you drive a RAM truck, a Cummins diesel, or a daily commuter vehicle, the right oil filter plays a critical role in engine health.
In this guide, we’ll break down what makes an oil filter “the best,” how OEM filters like Mopar oil filters compare to others, and how to choose the right option for your vehicle based on real-world performance factors.
Why Oil Filters Matter More Than Most Drivers Realise
Engine oil circulates constantly to lubricate moving parts, reduce friction, and carry away contaminants. Over time, microscopic particles such as dirt, soot, and metal shavings build up. Without a high-quality oil filter 6.7 cummins, these contaminants circulate through the engine, accelerating wear.
- Remove harmful contaminants efficiently
- Maintain consistent oil pressure
- Protect engine components from premature wear
- Extend engine lifespan
For diesel engines like the 6.7 Cummins, filtration quality is especially critical due to higher combustion pressures and soot production.
What Defines the Best Oil Filter?
Filtration Efficiency
High-quality filters capture smaller particles, often measured in microns. A lower micron rating typically means better filtration, though balance with oil flow is important.
Build Quality
Premium filters use durable metal housings, strong internal cores, and high-quality filter media to withstand pressure changes and high temperatures.
Anti-Drainback Valve
This prevents oil from draining out when the engine is off, ensuring immediate lubrication at startup — a crucial feature for engine protection.
Proper Fitment
A filter designed specifically for your engine ensures optimal oil flow and sealing, reducing the risk of leaks or pressure issues.
OEM vs Aftermarket: Which Oil Filters Perform Best?
Many drivers debate whether OEM filters are worth the investment compared to aftermarket alternatives.
OEM filters like Mopar oil filters are engineered specifically for the engine they’re designed for. This means precise fitment, tested performance, and reliable filtration.
Aftermarket filters can vary widely in quality. Some premium brands perform well, but lower-cost options may compromise on materials or filtration efficiency.
For RAM and Cummins engines, OEM filters are often recommended because they match factory specifications and maintain warranty compliance.
Are Fleetguard and Mopar Filters the Same?
Fleetguard and Mopar filters are closely related in many diesel applications because Cummins manufactures or supplies filtration components for certain Mopar diesel engines.
However, they are not identical. Mopar filters are designed and tested specifically for Chrysler, Dodge, and RAM vehicles, while Fleetguard focuses on broader heavy-duty applications.
Is an OEM Oil Filter the Best Choice?
In most cases, yes. OEM filters are designed alongside the engine, meaning they meet exact flow rate, pressure, and filtration requirements.
- Guaranteed compatibility
- Reliable performance
- Consistent filtration quality
- Peace of mind for long-term engine protection
Understanding Micron Ratings: 10 Micron vs 25 Micron
Micron rating refers to the size of particles a filter can capture.
- 10 micron filters capture smaller particles and provide finer filtration
- 25 micron filters allow higher oil flow but capture slightly larger contaminants
For diesel engines, finer filtration is generally beneficial because soot particles are extremely small.
Can a Larger Oil Filter Cause Low Oil Pressure?
Using a larger filter isn’t automatically harmful, but it can affect oil pressure if it changes flow characteristics or bypass valve settings.
- Reduce oil pressure
- Delay lubrication at startup
- Affect engine performance
Always use a filter designed for your specific engine rather than choosing based on size alone.
How Mopar Oil Filters Compare to Other Brands
Mopar filters are widely considered among the best rated oil filters for RAM and Chrysler vehicles because they’re engineered to match factory performance standards.
- High-quality filter media
- Strong internal construction
- Designed specifically for Mopar engines
- Consistent oil flow and pressure
Signs You’re Using a Poor-Quality Oil Filter
- Engine ticking or noise after startup
- Reduced oil pressure
- Dirty oil shortly after change
- Increased engine wear over time
How to Choose the Best Oil Filter for Your Vehicle
- Engine type (gas vs diesel)
- Manufacturer recommendations
- Driving conditions
- Oil change intervals
- Filtration efficiency
Cost vs Value: Are Premium Oil Filters Worth It?
Oil filters are relatively inexpensive compared to potential engine repairs. Spending slightly more on a high-quality filter can prevent costly wear and maintenance issues.
The Role of Oil Filters in Engine Longevity
Clean oil reduces friction, prevents sludge buildup, and protects critical components. Using a trusted brand like Mopar helps ensure your engine receives the protection it was engineered for.
Final Thoughts: What Is Truly the Best Oil Filter?
The best oil filter is one that balances filtration efficiency, build quality, and compatibility with your engine. For many drivers - especially RAM and Cummins owners - OEM filters provide the most reliable performance.
Choosing the right filter isn’t just about maintenance - it’s about protecting your engine for the long haul.
