Kendall Oil Vs. Mobil 1: Which One Is Better?

I’ve spent countless hours under the hood of my car, tinkering, tuning, and obsessing over what keeps the engine humming.

 Choosing the right motor oil is one of those decisions that feels like a high-stakes game—pick the wrong one, and your engine might not forgive you.

 Today, I’m putting two heavyweights, Kendall Oil and Mobil 1, head-to-head to help you decide which is the better fit for your ride.

 Through my own experiences, research, and a bit of gearhead curiosity, I’ll break down their pros, cons, and key features in a way that’s clear, engaging, and practical.

Comparison Table: Kendall Oil Vs. Mobil 1

My Journey With Motor Oils

As a car enthusiast who’s changed oil more times than I can count, I’ve learned that not all oils are created equal. My first car, a 2004 Honda Civic, ran on whatever conventional oil the local shop had on hand. It wasn’t until I upgraded to a turbocharged Subaru WRX that I started paying attention to what I poured into the engine. That’s when I stumbled across Kendall Oil and Mobil 1, two names that kept popping up in forums, mechanic shops, and even race tracks. I decided to test both in my cars over the years, and what I found was eye-opening.

Kendall Oil, with its red bottles and underdog vibe, surprised me with its performance for the price. Mobil 1, the shiny, well-marketed giant, lived up to its reputation but came with a heftier price tag. To figure out which one’s right for you, let’s break down their features, benefits, and drawbacks, drawing from my own experiences and what I’ve learned from other drivers.

Understanding Kendall Oil

Kendall Motor Oil, owned by Phillips 66, has been around since 1881, making it one of the oldest players in the game. I first encountered Kendall at a Firestone shop when I was looking for a budget-friendly synthetic for my wife’s high-mileage Toyota Camry. The mechanic swore by Kendall GT-1 Max, claiming it kept engines clean and running smoothly even after 150,000 miles. Intrigued, I gave it a shot.

Key Features of Kendall Oil

Kendall offers a range of oils—conventional, synthetic blends, and full synthetics like GT-1 Max and GT-1 High Performance. Their LiquiTek additive package caught my attention. It’s designed to reduce wear, resist oxidation, and keep sludge at bay, which is critical for older engines or those under heavy loads. I noticed my Camry’s engine ran quieter and smoother after switching to Kendall GT-1 Max 5W-30, and the oil stayed surprisingly clean after 8,000 miles.

Kendall’s full synthetic oils are formulated for turbocharged gasoline direct-injection engines, conventional gasoline vehicles, and even flex-fuel cars. They’re particularly good for extreme temperatures, with low-temperature flow that makes cold starts easier and high-temperature stability to prevent breakdown during summer road trips. For my Camry, which sees a mix of city commuting and occasional highway hauls, Kendall’s versatility was a big plus.

Pros of Kendall Oil

• Affordability: At $3–$5 per quart, Kendall is a steal compared to premium brands. I saved about $20 per oil change compared to Mobil 1, which adds up over time.
• High-Mileage Performance: Kendall’s GT-1 High Mileage Booster is a lifesaver for older engines. My friend’s 2006 Chevy Impala, with over 200,000 miles, showed less valve train noise after using it.
• Solid Protection: The LiquiTek additive package offers excellent wear protection and sludge resistance. I sent a sample of used Kendall GT-1 Max to Blackstone Labs after 8,000 miles, and the analysis showed minimal wear metals and good viscosity retention.
• Versatility: Kendall oils work well in a variety of vehicles, from daily drivers to light trucks. My Camry and my brother’s F-150 both ran smoothly on GT-1 Max.
• Low-Temperature Performance: Kendall’s low-viscosity grades (like 0W-20) flow well in cold weather, which was noticeable during winter mornings when my car started without hesitation.

Cons of Kendall Oil

• Limited Availability: Finding Kendall can be a hassle. It’s mostly sold at Firestone shops or specialty retailers like Petroleum Service Company. I had to order online for my last oil change, which added a few days of waiting.
• Fewer OEM Approvals: While Kendall meets API SP and some dexos1 Gen 2 standards, it lacks the extensive certifications of Mobil 1, which might matter for newer vehicles under warranty.
• Less Brand Recognition: Kendall doesn’t have the marketing muscle of Mobil 1. When I mentioned using Kendall to a car club buddy, he raised an eyebrow, assuming it was a “cheap” oil.
• Shorter Drain Intervals: Kendall’s full synthetic oils typically recommend 7,500–10,000-mile intervals, which is solid but falls short of Mobil 1’s extended performance options.

Exploring Mobil 1

Mobil 1 is the rockstar of motor oils, backed by ExxonMobil and a favorite among racers and enthusiasts. I first used Mobil 1 5W-30 in my WRX after a mechanic recommended it for turbocharged engines. The difference was immediate—smoother shifts, quicker throttle response, and an engine that felt like it was ready to take on a rally stage. Mobil 1’s reputation isn’t just hype; it’s built on decades of performance in extreme conditions, from NASCAR tracks to arctic winters.

Key Features of Mobil 1

Mobil 1 is a full synthetic oil, with variants like Extended Performance and Advanced Fuel Economy catering to specific needs. Its SuperSyn technology is the star of the show, offering advanced anti-wear protection, sludge prevention, and thermal stability. I was impressed by how clean my WRX’s dipstick looked after 10,000 miles, with no signs of sludge or discoloration. Mobil 1 also boasts a wide range of viscosity grades, from 0W-20 for fuel efficiency to 15W-50 for high-performance applications.

One thing that stood out was Mobil 1’s ability to handle extreme temperatures. During a summer road trip through Nevada, where temps hit 100°F, my engine stayed cool and responsive. Mobil 1’s high flash point (around 242°C) means it resists breakdown in scorching conditions, which is why it’s a go-to for racers and those towing heavy loads.

Pros of Mobil 1

• Superior Performance in Extreme Conditions: Mobil 1 excels in high-heat and high-stress environments. My WRX’s turbo never complained, even during spirited drives.
• Extended Drain Intervals: With variants like Extended Performance, Mobil 1 supports up to 20,000 miles or one year between changes. I stretched my WRX’s oil changes to 12,000 miles without issues, confirmed by a clean oil analysis.
• Wide OEM Approvals: Mobil 1 meets API SP, SN PLUS, dexos1 Gen 2, and European ACEA standards, making it a safe bet for most modern vehicles, including my friend’s Audi Q7.
• Sludge Resistance: Mobil 1’s low impurity content prevents sludge buildup. I’ve seen engines with 250,000 miles stay spotless on Mobil 1, which is reassuring for long-term ownership.
• Availability: You can find Mobil 1 at every auto parts store, Walmart, or online. I never had to hunt for it, unlike Kendall.

Cons of Mobil 1

• Pricey: At $6–$10 per quart, Mobil 1 is a premium investment. My last oil change cost nearly $50 just for the oil, which stings if you’re on a budget.
• Overkill for Some Vehicles: For daily drivers like my wife’s Camry, Mobil 1’s advanced features might be more than necessary. Kendall got the job done just as well for less.
• Not Ideal for High-Mileage Engines: Mobil 1’s high-mileage formula exists, but it’s not as tailored as Kendall’s High Mileage Booster. My friend’s Impala consumed a bit more Mobil 1 than expected.
• Cold Weather Viscosity Concerns: While Mobil 1 flows well in cold temps, some users report it takes slightly longer to circulate in sub-zero conditions compared to Kendall’s low-viscosity options.

Read More: My Thoughts On Valvoline MaxLife Vs. Full Synthetic Motor Oil

Head-To-Head Comparison

Now that I’ve laid out the basics, let’s put Kendall and Mobil 1 under the microscope. I’ve used both oils in similar conditions—city driving, highway trips, and the occasional spirited run—so I can share how they stack up in real-world scenarios.

Performance in Daily Driving

For my wife’s Camry, a 2010 model with 180,000 miles, Kendall GT-1 Max 5W-30 was a solid performer. The engine ran smoothly, with no noticeable power loss or noise, even after 8,000 miles of mixed city and highway driving. The oil’s affordability meant I could change it more frequently without breaking the bank, which gave me peace of mind for an older car. Mobil 1, on the other hand, felt like overkill for the Camry. Its premium features, like extended drain intervals and high-temperature stability, didn’t add much value to a daily driver that rarely saw extreme conditions.

In my WRX, however, Mobil 1 was the clear winner. The turbocharged engine demands oil that can handle high heat and stress, and Mobil 1 5W-30 delivered. The throttle response was crisp, and the engine stayed clean even after pushing it hard on winding backroads. Kendall held its own in similar conditions, but I noticed slightly more engine noise under heavy acceleration, suggesting Mobil 1’s additive package might offer a slight edge in extreme performance scenarios.

High-Mileage Vehicles

High-mileage cars, like my friend’s 2006 Chevy Impala, need oils that prevent leaks and reduce wear. Kendall’s GT-1 High Mileage Booster is specifically designed for engines with over 75,000 miles, offering seal conditioners and extra anti-wear additives. After switching to Kendall, the Impala’s valve train quieted down, and oil consumption dropped noticeably. Mobil 1’s High Mileage formula is good, but it didn’t seem to address seal conditioning as effectively. I checked the dipstick after 6,000 miles on Mobil 1, and the oil level was down about a quart, which wasn’t an issue with Kendall.

Extreme Conditions

Living in a place with cold winters and hot summers, I’ve tested both oils in extreme temperatures. Kendall’s low-viscosity grades, like 0W-20, flow well in sub-freezing conditions, making cold starts smooth. I never had an issue cranking the engine at 20°F. Mobil 1, however, takes the crown for high-temperature performance. Its higher flash point (242°C vs. Kendall’s 220°C) means it resists breakdown better in scorching heat. During a 100°F day towing a trailer with my F-150, Mobil 1 kept the engine temperature stable, while Kendall showed slight thinning in a similar scenario.

Oil Change Intervals

One of Mobil 1’s biggest selling points is its extended drain intervals. The Extended Performance variant claims up to 20,000 miles or one year, which is perfect for someone like me who sometimes forgets to schedule oil changes. I pushed Mobil 1 to 12,000 miles in my WRX, and the oil analysis came back clean, with minimal wear metals. Kendall’s full synthetic oils recommend 7,500–10,000 miles, which is respectable but doesn’t match Mobil 1’s longevity. For my Camry, I stuck to 8,000-mile intervals with Kendall, and the engine stayed in great shape, so the shorter interval wasn’t a dealbreaker.

Cost and Value

Price is a big factor for most of us. Kendall’s lower cost—around $40 for 12 quarts—makes it a budget-friendly choice. I could do two oil changes for the price of one Mobil 1 change, which cost me about $50 for 5 quarts. For daily drivers or high-mileage vehicles, Kendall offers excellent value without sacrificing quality. Mobil 1’s higher price is justified for performance cars or extreme conditions, but for the average driver, it might be more than you need. I felt the extra cost of Mobil 1 was worth it for my WRX, but for my wife’s Camry, Kendall was the smarter pick.

Availability and Convenience

Mobil 1 is everywhere—auto parts stores, Walmart, even gas stations. I never had trouble finding the right viscosity grade for my vehicles. Kendall, however, is trickier to track down. I had to order GT-1 Max online or visit a Firestone shop, which added some inconvenience. If you’re someone who likes to grab oil off the shelf during a last-minute oil change, Mobil 1’s availability is a big advantage.

Engine Cleanliness

Both oils excel at keeping engines clean, but Mobil 1 has a slight edge. Its SuperSyn technology minimizes sludge and deposits, which I confirmed with a clean dipstick after 10,000 miles in my WRX. Kendall’s LiquiTek package is no slouch, though. My Camry’s engine looked spotless after 8,000 miles, and a Blackstone Labs report showed low levels of contaminants. For most drivers, the difference in cleanliness is negligible, but Mobil 1’s proven track record in high-performance applications gives it a slight lead.

OEM Approvals and Certifications

If you drive a newer vehicle under warranty, OEM approvals matter. Mobil 1 boasts a long list of certifications, including API SP, SN PLUS, dexos1 Gen 2, and European ACEA standards, making it a safe choice for brands like GM, Audi, and Porsche. Kendall meets API SP and some dexos1 Gen 2 standards but falls short on broader certifications. I didn’t run into warranty issues with Kendall in my older cars, but for a brand-new vehicle, I’d lean toward Mobil 1 to stay on the safe side.

Real-World Experiences and Community Insights

To get a broader perspective, I scoured car forums and talked to mechanics and fellow enthusiasts. On BobIsTheOilGuy.com, users praised Kendall GT-1 Max for its cleaning ability and affordability, with one user reporting a spotless engine after 300,000 miles on a BMW. Mobil 1, however, dominates the performance crowd, with NASCAR teams and racers swearing by its durability under extreme conditions. A mechanic friend told me he uses Kendall for budget-conscious customers and Mobil 1 for high-performance builds, which aligns with my own findings.

I also ran an experiment: I switched my brother’s F-150 from Mobil 1 to Kendall GT-1 Max for a year. The truck, with 120,000 miles, ran just as well on Kendall, with no noticeable difference in fuel economy or engine noise. However, when he towed a heavy trailer, the engine felt slightly more strained on Kendall than on Mobil 1, suggesting Mobil 1’s edge in demanding scenarios.

Making the Choice: Kendall or Mobil 1?

Choosing between Kendall and Mobil 1 depends on your vehicle, driving habits, and budget. If you’re like me, with a mix of daily drivers and performance cars, you might end up using both. For my wife’s Camry, Kendall GT-1 Max is the go-to—affordable, reliable, and perfect for high-mileage engines. For my WRX, Mobil 1’s superior heat resistance and extended drain intervals make it worth the extra cost. Here’s a quick guide to help you decide:

• Choose Kendall if: You’re on a budget, drive a high-mileage vehicle, or don’t need extreme performance. It’s a great all-around oil for daily driving and mixed conditions.
• Choose Mobil 1 if: You own a performance car, tow heavy loads, or drive in extreme temperatures. Its advanced technology and long drain intervals are ideal for demanding applications.

Read More: My Thoughts On Rislone Vs. Marvel Mystery Oil

Frequently Asked Questions (FAQ)

Conclusion

You’re standing at the auto parts store, staring at rows of oil bottles, and the choice between Kendall Oil and Mobil 1 feels overwhelming. I’ve been there, and after years of testing both, I can tell you they’re both excellent, but they serve different purposes. Kendall is your budget-friendly, high-mileage hero, keeping engines clean and running smoothly without draining your wallet. Mobil 1 is the premium powerhouse, built for performance cars and extreme conditions. Weigh your driving needs, check your owner’s manual, and pick the oil that fits your life. Your engine will thank you for it.