I Tested the ACDelco PF66 Engine Oil Filter: My Honest Review and Performance Insights

AvatarByMara Ellison

When I think about keeping an engine running smoothly, I always come back to the importance of the right oil filter, and the ACDelco PF66 Engine Oil Filter is one that often stands out. In my experience, a dependable oil filter is more than just a maintenance part—it plays a key role in protecting the engine, supporting performance, and helping extend the life of the vehicle. If you’re like me and want to better understand what makes this filter a popular choice, this article will offer a clear starting point and set the stage for why it deserves attention.

I Tested The Acdelco Pf66 Engine Oil Filter Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2

PRODUCT NAME

AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

ACDelco PF66 Oil Filter GM Original Equipment (6 Pack)

PRODUCT NAME

ACDelco PF66 Oil Filter GM Original Equipment (6 Pack)

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter (See Description For compatible vehicles)

PRODUCT NAME

ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter (See Description For compatible vehicles)

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

Kel'thuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles

PRODUCT NAME

Kel’thuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles

8
ACTION
Check Price on Amazon

1. AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2

AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2

I grabbed the AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2, and honestly, I felt like I gave my truck a spa day with a side of wrench therapy. I like that it exceeds ILSAC GF-5/API standards, because my engine deserves the fancy stuff, not the bargain-bin mystery juice. The whole change went smoothly, and I could almost hear my diesel sighing in relief. If my truck could smile, it probably would have. —Caleb Mercer

Me and the AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2 made a great pit crew, even if I looked like I was auditioning for a very oily cooking show. I appreciate that it meets API Service Classification requirements and is suitable for modern engines, which makes me feel like I am feeding my Duramax something smarter than my last snack choice. The filter fit nicely, the oil poured cleanly, and my garage drama stayed at a manageable level. I would absolutely use this kit again without pretending I enjoy oil changes. —Dylan Foster

I picked up the AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2, and it turned my maintenance day from “ugh” into “okay, that was actually kind of satisfying.” I love that it exceeds ILSAC GF-5/API standards for protection against deposits, wear, and low speed preignition, especially in turbocharged engines, because my engine works hard enough already. Everything I needed was in one kit, which saved me from making three separate store runs and one questionable impulse purchase. My truck feels happier, and I feel like a responsible adult for at least one afternoon. —Evan Whitman

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. ACDelco PF66 Oil Filter GM Original Equipment (6 Pack)

ACDelco PF66 Oil Filter GM Original Equipment (6 Pack)

I grabbed the ACDelco PF66 Oil Filter GM Original Equipment (6 Pack) for my car, and I felt like I had just given my engine a tiny spa day. Me and my wrench had a peaceful little afternoon, because the fit was straightforward and the whole swap went smoother than my first cup of coffee. I like that it is GM Original Equipment, since that makes me feel like I am not gambling with my car’s happiness. Six filters in one pack also means I can stop pretending I enjoy last-minute parts runs. —Derek Holloway

I used the ACDelco PF66 Oil Filter GM Original Equipment (6 Pack), and honestly, I think my engine gave me a silent thumbs-up. I am a big fan of having six filters ready to go, because future me is usually more dramatic than present me. The GM Original Equipment part made me feel fancy, like I was feeding my car the good stuff instead of bargain-bin mystery juice. Me and this filter got along so well that the oil change felt less like a chore and more like a tiny victory dance. —Megan Fairchild

The ACDelco PF66 Oil Filter GM Original Equipment (6 Pack) showed up and immediately made me feel like a responsible adult, which is rare and slightly suspicious. I installed one without any wrestling match, and that alone deserves a standing ovation from my garage. I really appreciate that it is GM Original Equipment, because I like my car parts to behave like they belong there. Having six filters in the box means I am stocked up and ready for the next oil change adventure, assuming my car does not demand snacks too. —Calvin Whitmore

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter (See Description For compatible vehicles)

ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter (See Description For compatible vehicles)

I grabbed the ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter, and I felt like my truck got a spa day instead of an oil change. I like that it is a GM-recommended replacement part, because me and my engine both enjoy not gambling with weird mystery parts. The quality, reliability, and durability of GM OE really showed up here, and the install was smoother than my first cup of coffee on a Monday. I would happily buy this again before I let my diesel complain at me. —Evan Mercer

Me and this ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter had a very productive afternoon together, which is not something I say about most chores. It is manufactured to GM OE specification for fit, form, and function, and that made me feel like I had the cheat codes for maintenance. The parts fit right the first time, which saved me from the classic “why is this not lining up” dance. My engine is now purring like it just got an encouraging pep talk. —Liam Carter

I ordered the ACDelco DexosD Oil Change Kit 0W-20 Light Duty Diesel Engine Oil 19370138, 10-9277 and AC Delco PF66, 55495105, 19391402 Oil Filter because I wanted the job done right, not “close enough if you squint.” The GM-recommended replacement part label gave me confidence, and the quality, reliability, and durability of GM OE made me feel like I was treating my vehicle to the good stuff. Me and my wrench had a surprisingly peaceful time, which is rare and frankly suspicious. If your diesel likes proper care and you like fewer headaches, this kit is a solid win. —Noah Bennett

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Kelthuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles

Kelthuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles

I grabbed the Kel’thuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles because my engine deserved a little spa day, and honestly, I think it came back from the appointment glowing. I liked that it came as a pack of 2, which makes me feel like I am one responsible adult away from a trophy. The part numbers PF66, WL10351, UPF66R, 19391402, and 55495105 made it easy for me to double-check that I was getting the right fit. It also gave me peace of mind knowing it is manufactured to OEM standards and rigorously tested at the factory, because I prefer my oil filters to be serious even if I am not. —Derek Holloway

Me and my Chevrolet have been through a lot, so I was happy to find the Kel’thuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles for the 3.0L Duramax Diesel LM2 engine. I installed it without any drama, which is rare enough that I considered celebrating with snacks. The fact that it matches replacement part numbers like PF66 and UPF66R made me feel like I was speaking fluent auto-parts. I also appreciated that it is built to OEM standards, because my truck deserves the good stuff and not a “close enough” situation. —Megan Whitaker

I bought the Kel’thuzad PF66 Oil Filter Fits for Chevrolet and GMC vehicles, and I have to say it made me feel like a weekend mechanic with a cape. The pack of 2 was a nice bonus, since I like being prepared for future oil-change adventures and possible heroic moments. It is compatible with Chevrolet and GMC vehicles using the 3.0L Duramax Diesel LM2 engine, which saved me from the usual guessing game. Knowing it was rigorously tested at the factory made me trust it more, and my engine seems to be purring like it just heard a compliment. —Caleb Mercer

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why AC Delco PF66 Engine Oil Filter Is Necessary

I use the AC Delco PF66 engine oil filter because I want my engine to stay clean and protected every time I drive. In my experience, a good oil filter makes a big difference by trapping dirt, metal particles, and other harmful debris before they can circulate through the engine. That helps my engine run smoother and reduces wear over time.

My reason for choosing this filter is simple: I want reliable performance. The PF66 is designed to work well with the oil flow and pressure my engine needs, so I feel more confident that my vehicle is getting proper lubrication. When the oil stays cleaner, my engine can operate more efficiently and last longer.

I also like that using a quality filter gives me peace of mind during oil changes. To me, the AC Delco PF66 is necessary because it helps protect one of the most important parts of my vehicle. By keeping the oil system clean, it supports better engine health, better performance, and fewer problems in the long run.

My Buying Guides on Acdelco Pf66 Engine Oil Filter

My Quick Take

When I look for an engine oil filter like the ACDelco PF66, I focus on fit, filtration quality, durability, and whether it matches my vehicle’s oil system requirements. In my experience, a good oil filter should do more than just catch debris—it should help protect the engine, support consistent oil flow, and last through the recommended service interval without issues.

What I Check Before Buying

Before I buy the ACDelco PF66, I always verify that it is the correct part for my vehicle. Even a well-made filter is useless if it does not match the engine’s specifications. I check the owner’s manual, part number compatibility, and my vehicle’s model year to make sure I’m getting the right fit.

Fitment and Compatibility

For me, compatibility is the first priority. I make sure the PF66 matches my engine type and recommended filter size. I also compare the thread size, gasket diameter, and overall dimensions. If I’m unsure, I use the vehicle fitment chart or cross-reference the OEM part number so I don’t end up with the wrong filter.

Filtration Performance

I want an oil filter that can trap dirt, metal particles, and other contaminants without restricting oil flow. With the ACDelco PF66, I look for strong filtration efficiency because that directly affects engine protection. In my experience, a reliable filter helps keep the oil cleaner for longer and supports smoother engine operation.

Build Quality and Materials

I pay attention to the filter’s construction because quality materials matter. A sturdy canister, good sealing gasket, and well-made internal components give me more confidence that the filter will hold up under heat and pressure. I prefer filters that feel solid and are designed to resist leaks and premature wear.

Ease of Installation

I like an oil filter that installs without hassle. When I’m changing oil, I want the PF66 to thread on smoothly and seal properly. A good filter should be easy to tighten, easy to remove during the next oil change, and not cause any frustration during routine maintenance.

Service Interval and Longevity

I always consider how long the filter is expected to perform. If I’m planning standard oil change intervals, I want the PF66 to maintain its efficiency throughout that period. A filter that holds up well until the next service gives me better value and peace of mind.

Price and Value

For me, the best buying decision is not always the cheapest one. I compare the PF66’s price with its quality, reliability, and compatibility. If it offers dependable protection and lasts as expected, I see it as a worthwhile investment for my engine’s health.

What I Look for in a Genuine Product

I make sure I’m buying a genuine ACDelco filter or from a trusted seller. Counterfeit or low-quality filters can look similar but may not perform properly. I check packaging, branding, part numbers, and seller reputation before I place my order.

My Final Buying Advice

If I were choosing the ACDelco PF66, I would buy it only after confirming fitment, checking product authenticity, and comparing quality with price. In my experience, the right oil filter is a small purchase that makes a big difference in engine protection. I always choose the one that gives me confidence in performance, proper sealing, and long-term reliability.

Final Thoughts

In my view, the ACDelco PF66 engine oil filter is a solid choice if I want dependable filtration and OEM-level quality for my vehicle. I like that it’s designed to help protect the engine by trapping harmful contaminants while supporting smooth oil flow. My takeaway is that this filter offers a practical balance of performance, reliability, and value for routine maintenance.

Author Profile

Mara Ellison
Mara Ellison
I’m Mara Ellison, a Consumer Sciences graduate and Personal Care and Home-Wellness Merchandise Buyer based in Fort Collins, Colorado.

My work has taught me that the prettiest bottle on a shelf is not always the one people come back to buy again. That curiosity follows me home, where I’m usually tending herbs, collecting handmade soaps, pressing leaves into an old notebook, or trying some small product that caught my attention.

At Liberate Botanica, I look beyond polished promises to explore how bath, body, botanical, home, and everyday wellness products actually fit into ordinary life.