Purolator Oil Filter: The Ultimate Guide to Choosing, Installing, and Maintaining for Optimal Engine Performance
Your car’s engine is a complex machine with hundreds of moving parts, and one of its most critical protectors is often overlooked: the oil filter. Among the many brands on the market, Purolator has stood out for over a century as a trusted name in filtration. Whether you’re a DIY mechanic or rely on professional service, understanding Purolator oil filters—their types, benefits, installation, and maintenance—can mean the difference between a long-lasting engine and costly repairs. This guide breaks down everything you need to know to make informed decisions, ensuring your engine stays clean, efficient, and protected.
Why Oil Filters Matter More Than You Think
Before diving into Purolator specifically, let’s clarify why oil filters are non-negotiable. Engine oil lubricates moving parts, but it also picks up dirt, metal shavings, soot, and other contaminants as it circulates. Without a filter, these particles would scratch cylinder walls, wear down bearings, and clog narrow oil passages—all of which lead to reduced performance, overheating, and even engine failure. A high-quality oil filter like Purolator traps 99% or more of these impurities, keeping oil clean and your engine running smoothly. Over time, this small component saves you from expensive repairs and extends your vehicle’s lifespan by thousands of miles.
Purolator: A Brand Built on Filtering Excellence
Purolator’s story began in 1923, when Frank P. Donaldson invented the first automotive oil filter. At the time, engines were prone to sludge buildup, and Donaldson saw a need for a solution. His invention—a canister with a replaceable filter element—revolutionized automotive maintenance. Today, Purolator is part of the MANN+HUMMEL group, a global leader in filtration technology, but it retains its focus on innovation and reliability.
What sets Purolator apart?
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Decades of R&D: With over 100 years of experience, Purolator has refined its designs to handle modern engines’ demands, including high-performance sports cars, hybrids, and heavy-duty trucks.
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Certifications: Their filters meet or exceed industry standards like API (American Petroleum Institute), ILSAC (International Lubricant Specification Advisory Committee), and OEM (Original Equipment Manufacturer) specifications. Many are direct-fit replacements for factory-installed filters.
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Material Science: Purolator uses synthetic media, cellulose blends, and metal housings to balance durability, flow rate, and filtration efficiency. For example, their synthetic filters resist breakdown in high heat, while cellulose options offer cost-effective protection for everyday drivers.
Types of Purolator Oil Filters: Which One Do You Need?
Purolator offers a range of filters to suit different vehicles, driving habits, and preferences. Here’s how to tell them apart:
1. Traditional Purolator Filters (OEM-Style)
These are the classic, direct-replacement filters designed to match factory specs. They work with most vehicles and are ideal for drivers who follow standard oil change intervals (every 5,000–7,500 miles). Look for part numbers starting with “L” (e.g., L20060), which indicate universal fitment, or “PL” (e.g., PL14410) for specific vehicle applications.
2. Purolator Plus (Synthetic Media)
For drivers who want longer oil change intervals or drive in harsh conditions (extreme heat, stop-and-go traffic, towing), Purolator Plus filters feature synthetic media that lasts up to 15,000 miles. The synthetic fibers trap smaller particles (down to 20 microns) and resist clogging, making them a favorite among high-mileage drivers.
3. Purolator One (Advanced Filtration)
Purolator One takes protection a step further with a dual-layer synthetic media and a stronger canister. It’s engineered for modern turbocharged engines, which generate more heat and contaminants. These filters often have a higher bypass valve rating (to prevent oil starvation if the filter clogs) and are recommended for vehicles with extended warranty requirements.
4. Heavy-Duty and Commercial Filters
Truck owners and commercial fleets can opt for Purolator’s heavy-duty line, which includes larger capacity elements and reinforced housings to handle higher oil volumes and contaminants from diesel engines.
How to Choose the Right Purolator Oil Filter for Your Vehicle
Selecting the correct filter isn’t just about brand—it’s about compatibility. Here’s a step-by-step process:
Step 1: Check Your Owner’s Manual
Your vehicle’s manual lists the required filter specifications, including part number, thread size (e.g., 16x1.5mm), and gasket diameter. If you don’t have the manual, use Purolator’s online catalog (found on their website) or apps like RockAuto to input your make, model, and year.
Step 2: Consider Your Driving Habits
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Daily Commuter: A standard Purolator filter with a 5,000–7,500 mile interval works fine.
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Towing/Hauling: Upgrade to Purolator Plus or One for longer life and better contamination control.
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Extreme Climates: Hot summers or cold winters strain oil and filters; synthetic media handles temperature swings better.
Step 3: Match Viscosity and Additives
Some filters are optimized for specific oil viscosities (e.g., 0W-20 vs. 5W-30). While most Purolator filters work with standard oils, check the packaging or website for compatibility notes if you use synthetic blends or high-mileage oils.
Installing a Purolator Oil Filter: A Step-by-Step Guide
Installing a new oil filter is a simple DIY task with the right tools. Here’s how to do it safely and effectively:
Tools Needed:
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Socket wrench or oil filter wrench (size depends on your filter)
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New Purolator oil filter
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Funnel
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Gloves and safety glasses
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Rags or shop towels
Steps:
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Warm Up the Engine: Run the engine for 5–10 minutes to thin the oil, making it easier to drain. Turn off the engine and let it sit for 10–15 minutes.
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Drain the Old Oil: Locate the oil pan drain plug, position a drain pan underneath, and remove the plug. Let the oil drain completely.
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Remove the Old Filter: Use the oil filter wrench to loosen the old filter. Be cautious—some filters are hot, and oil may spill. Wipe the filter housing with a rag to remove debris.
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Prep the New Filter: Dip your finger in fresh oil and apply a thin layer to the gasket on the new Purolator filter. This ensures a tight seal and prevents leaks.
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Install the New Filter: Screw the filter into place by hand until the gasket makes contact with the housing. Tighten it an additional ¾–1 turn—do not overtighten, as this can damage the gasket.
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Reinstall the Drain Plug: Replace the drain plug with a new gasket (if needed) and tighten it securely.
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Add New Oil: Use a funnel to pour in the recommended amount of oil. Check the dipstick to ensure proper levels.
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Test for Leaks: Start the engine, let it run for a minute, and check the filter and drain plug for leaks. If all is clear, lower the vehicle and dispose of the old oil properly (never pour it down the drain!).
Maintaining Your Purolator Oil Filter: When to Replace and How to Extend Its Life
Even the best filters need replacement. Here’s what to watch for:
Signs It’s Time to Change:
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Oil Change Interval: Follow your manual or the filter’s recommendation (standard: 5,000–7,500 miles; synthetic: 10,000–15,000 miles).
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Low Oil Pressure: A clogged filter can restrict oil flow, causing the oil pressure light to come on.
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Visible Contamination: If you drain the oil and notice excessive sludge or metal shavings, the filter may have failed prematurely.
Extending Filter Life:
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Change Oil Regularly: Fresh oil has fewer contaminants, reducing the filter’s workload.
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Avoid Overheating: High engine temperatures degrade oil and filter media faster. Keep your cooling system maintained.
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Use Quality Oil: Pair Purolator filters with high-grade oil (e.g., API SP or ILSAC GF-6) to maximize filtration efficiency.
Purolator vs. Competitors: Why Choose Purolator?
With brands like Fram, Wix, and Bosch in the market, why stick with Purolator? Here’s how they stack up:
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Filtration Efficiency: Purolator’s synthetic media often outperforms basic cellulose filters in trapping small particles.
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Durability: Their metal housings are thicker and more resistant to cracking under high pressure.
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OEM Partnerships: Many automakers, including Ford and GM, use Purolator filters as original equipment, a testament to their reliability.
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Price Point: Purolator offers premium protection at a mid-range price, making it accessible for both budget-conscious and performance-driven drivers.
Common Questions About Purolator Oil Filters
Q: Can I use a Purolator filter on a diesel engine?
A: Yes, Purolator makes heavy-duty filters designed for diesel engines, such as the Purolator DuraPlus series. Always check compatibility with your diesel engine’s specs.
Q: Do Purolator filters void my car’s warranty?
A: No—if the filter meets or exceeds OEM specifications, using a Purolator won’t void your warranty. In fact, many dealerships stock Purolator as a recommended replacement.
Q: How do I dispose of an old oil filter?
A: Drain the filter completely (let it sit upside down for 24 hours), then recycle it at an auto parts store or hazardous waste facility. Most states require this to prevent environmental contamination.
Final Thoughts: Investing in Purolator for Long-Term Engine Health
A Purolator oil filter is more than a replacement part—it’s an investment in your engine’s longevity. By choosing the right type, installing it correctly, and maintaining it on schedule, you’ll keep your engine clean, efficient, and protected from costly damage. Whether you’re a seasoned mechanic or a new car owner, Purolator’s combination of history, technology, and reliability makes it a smart choice for anyone serious about car care.
Remember: Your engine works hard for you—return the favor with a filter that works just as hard to protect it.