Bad motor oil brands. Be aware that mixing viscosity grades will turn out a product that is different in viscosity than either what was originally in the engine or what was added. Can I use any other brand of diesel oil with the same weight to top off my oil in my truck? I need probably a quart. Final Thoughts: Can I Switch Oil Brands in My Car? There are a number of factors that influence oil quality, but thankfully, changing brands won’t damage your engine. In this article, we are going to see what are the worst motor oil brands you must avoid at all costs. is Popular Synthetic Oil Brands When it comes to choosing motor oil for your vehicle, it’s important to be aware of the popular synthetic oil brands in the market. Questron Motor Oil is not a good option for any of the cars on the road today. Q10-40 Motor Oil. Some motor oil brands use deceptive packaging, making it hard for consumers to make good choices. So who makes Walmart's Super Tech brand and how good is it? The good news is that switching oil brands is generally safe and won’t harm your engine. Jan 2, 2026 · Bad motor oil can damage your engine. Modern motor oils are designed to meet strict industry standards, making them compatible with different brands. In fact, it actually owns many of the most popular motor oil companies around today, including these brands. Bullseye Motor Oil is another brand that has failed to meet very basic standards. Here's Why Changing Your Engine Oil After 5,000 Miles Will Destroy Your Car Never Buy Engine Oil that Says This 64K Dislike 2,666 There are different opinions to the question, can you mix different brands of oil. After all, your engine contains many moving parts that must remain lubricated to work properly. The label itself doesn’t claim to meet any standards. I paid an independent oil testing lab to analyze all of the motor oils, and I per Top 5 Engine Oil brands in Bangladesh 2021 and their compnay, which engine oil is best for motorcycle engine, about these grade and also which is more effective The better the rating, the better the oil service classification. The Petroleum Quality Institute of America found that this brand doesn’t meet API standards for viscosity, additives, and other necessary specifications. regular oil and whether you can mix motor oils. Read on for motor oil brands to avoid. The Petroleum Quality Institute of America is out with advice on what is the worst oil to put in your engine and it might surprise you where you can buy it. Also, the specialties that this brand is promising, don’t serve a maximum of those. Not all motor oils are created equal, and some can even harm your engine. And if it is true, if you stayed with the same oil after you changed brands would the oil usage finally Can you mix engine oil brands? Discover the facts, risks, and best practices for mixing oils to keep your engine running smoothly and safely. Otherwise, your engine could develop some serious wear and tear. As per our team's research, based on poor viscosity and low quality, the motor oil brands to avoid are Liberty, Petrol, Questron, Bullseye, Xcel, and Q10-40. Thinking I'll go with Pennzoil full synth made from natural gas because it's ranked pretty high for keeping bad stuff from circulating inside your engine. Synthetic oil is prized for its stability and performance, but its longevity depends on storage conditions and whether the container has been opened. Shipping globally. The oil you put in your engine matters. Is there any legitimate reason that this could be true? I don't think it is true but wondering what you think. Trained Jiffy Lube technicians help millions of motorists select the right motor oil. It is always advisable to not mix motor oil brands, however, different viscosity grades of the same brand motor oil are compatible. As such, there will be brands to target, and brands to avoid. Free Shipping on parts and accessories orders over $100! Choosing the right motor oil is crucial for keeping your car running smoothly. Synthetic oil offers superior performance and protection compared to conventional oil, making it a preferred choice for many car owners. Plus, we’ve added a handy comparison table to help you see the differences at a glance. The packaging continually uses phrasing that makes it appear to meet API SN/GF-5 guidelines. It’s important to know which motor oil brands to avoid. Otherwise, your engine could develop some serious wear and Stay updated with the most recent car news, automotive trends, expert reviews, and industry rumors at Autoblog. Having failed to give some of the basic benefits of motor oil, Quaker State Q stands second among the worst motor oil brand names. Discover Griggs Lawn and Tractor in Courtland, VA – your trusted dealer for high-quality tractor, zero-turn mower, and outdoor equipment parts. Here’s a list of engine oils that experts and consumers often criticize for their There are several instances in which high-mileage oil may be the right choice for your vehicle. The rating of the oil can give you a clue as to its quality and is something to consider when switching brands. 7L diesel but can't find any right now. Unfortunately, some budget oils just don’t meet the standards required for smooth operation long-term. is America’s largest digital and print publisher. If you’re looking to use a new brand of engine oil, this is ok providing that the old oil is completely drained . Around for more than 14 years, Ford now makes an EcoBoost for every gas-powered vehicle in its catalog. There are several instances in which high-mileage oil may be the right choice for your vehicle. Shell is a big name in the automotive world. Before purchasing some motor oil, you may want to know which brands perform better than others. I have been using Shell Rotella T6 5W/40 for my 2014 F250 6. Is it OK to mix a synthetic motor oil with a conventional oil? How about mixing different brands of oil? We explore the myths and get down to the facts to help settle any debate. Motor oil brand quality varies dramatically despite similar packaging and marketing claims, with laboratory analysis revealing that bottom-tier brands fail critical protection tests 65% more frequently than industry leaders. Apr 1, 2025 · Many vehicles produced today require full synthetic motor oil to be added when the used stuff is changed out. Currently, Xpress Lube Pro Motor Oil isn’t recommended by professionals. How much emphasis do you put on buying the "best" quality oil and filter in your car? I generally buy a good brand (Shell) motor oil and (Fram or Champion) oil filters that are a great value but I don't splurge on the "best" such as Mobil 1 synthetic and Wix. Liberty Motor oil. While all engine oils are manufactured to an SAE (Society of Automotive Engineers) standard, it is not recommended to mix different brands of engine oils, even if they are the same viscosity as each brand uses their own formula. However, not all products 11 Worst Motor Oil Brands to Avoid Motor oil is one of those utilitarian products that often goes unthought of until you really need it. It may fail to effectively prevent the buildup of harmful deposits within the engine, leading to decreased performance and potential engine damage over time. Engine oil is a vital part of your car’s performance, and choosing the right one can make all the difference. Here's an expert opinion on this subject and everything you should know. Shelf Life Of Unopened Synthetic Oil Unopened synthetic motor oils typically have a long shelf Mixing different engine oil viscosities and brands is safe for emergency situations, but optimal engine protection comes from consistent use of manufacturer-recommended oils. Learn about career opportunities, leadership, and advertising solutions across our trusted brands Discover Griggs Lawn and Tractor in Courtland, VA – your trusted dealer for high-quality tractor, zero-turn mower, and outdoor equipment parts. The good news is that switching oil brands is generally safe and won’t harm your engine. But what happens if you put the wrong oil in your car? Should you panic? Shop from 500+ luxury labels, emerging designers and streetwear brands for both men and women. Positioned as an economical choice, Cruz-In motor oil does not provide the same level of engine cleanliness and protection as more established brands. Credit: guidetoiceland. In an effort to help both do-it-yourselfers and car owners presented with a bevy of People Inc. 2025 Bad Boy Magnum • Fresh Oil change • 6 Hours • Kholer Motor 24hp (k724 series) Brand new pretty much, i’ve decided to go with a bad boy stand on mower with smaller deck. Xpress Lube Pro. $3,500 firm Explore search trends by time, location, and popularity with Google Trends. When it comes to automobile maintenance, STP oil, short for Scientifically Treated Petroleum, is a popular option. Save big on Bad Boy mower parts and accessories at the nations largest Bad Boy parts dealer. Gucci, Off-White, Acne Studios, and more. Motul S. But if you use the motor oil of this brand, you are going to damage your engine for sure. One of the main reasons to avoid this brand is that the company is not even true to its words. Questron Motor Oil. This article explains how long unused synthetic oil lasts, how to store it properly, and practical guidelines to keep it fresh until it’s needed. First of all, this brand has a high price tag but remains inadequate regarding the product’s quality. Even the most dependable car requires having the right motor oil. Xpress Lube Pro Motor Oil. So today, we will save you from making a big mistake by listing six bad motor oil brands in the market, and with this guide, you will save yourself from picking a motor oil that does nothing good for your vehicle. is a global French company which manufactures, develops and distributes lubricants and other specialized products for engines (motorcycles, cars and other vehicles) and for industry. Aug 13, 2025 · This comprehensive analysis exposes the truth about motor oil brand performance based on laboratory testing, fleet trials, and failure analysis spanning 50 million operational miles. Like other brands, Petrol Motor Oil misleads its users with wrong information and guidance. Petrol Motor oil. These are the 10 best motor oil brands, ranked. How to Spot a Good Oil Filter and Avoid Buying a Bad Oil Filter For Your Car So today, we will save you from making a big mistake by listing six bad motor oil brands in the market, and with this guide, you will save yourself from picking a motor oil that does nothing good for your vehicle. Quaker State Q. We recommend using an engine flush each time you Here’s the thing: all oils are not created equal. The STP Oil Additive is a concentrated formula containing a mixture of lubricants and additives specifically formulated to help improve engine performance and As for whether you can mix different brands of oil or mix a synthetic with a conventional oil or vice versa, Ari gets down to the facts in this episode of The Shop Manual. As long as the oil weight and certifications match what your car needs, there is no point in paying extra for a brand name. A bad brand of oil filter will oil to circulate the engine, causing significant engine. . The PQIA has put a consumer alert on Q10-40 Motor Oil because it may harm engines. Liberty oil has many benefits and features, but it cannot give an average-quality product. " Everyone knows how important it is to change your car's oil. A. I heard in a podcast said that switching oil brands "could" lead to oil usage. Bullseye Motor Oil. Different brands use different formulations and additives that can impact how well they protect your engine. Not all motor oil brands are created equal, and using subpar oil can lead to serious damage. Get unbiased ratings and reviews for 10,000+ products and services from Consumer Reports, plus trusted advice and in-depth reporting on what matters most. Learn about synthetic vs. In this modern age of car models, SAE and viscosity grading are among the most important labels on motor oil brands, but Xpress Lube Pro avoids this. All motor oils must follow certain guidelines. It’s been criticized as being very low-quality and not meeting the standards set by the API. Selecting the right brand of automatic transmission fluid requires matching your car's model, mileage, and other important factors. If you switch brands frequently, your engine might not get the consistent protection it needs, which could lead to accelerated wear and tear. As a result, there will be no blame upon you if yo This guide reveals the 12 worst motor oil brands to avoid and introduces you to the best ones, which consistently outperform the rest. Exceptional service, reliable brands, and expert advice for all your lawn care needs Around for more than 14 years, Ford now makes an EcoBoost for every gas-powered vehicle in its catalog. Exceptional service, reliable brands, and expert advice for all your lawn care needs The oil you put in your engine matters. The main purpose of using motor oil is to run your car smoothly and protect your engine using the lubrication that it serves. It is designed to improve the engine's performance, prevent wear and tear, and reduce the quantity of fuel consumed. I'm thinking about using Mobil Delvac 1 5W/40 Here's Why Changing Your Engine Oil After 5,000 Miles Will Destroy Your Car Never Buy Engine Oil that Says This 64K Dislike 2,666 Which oil brand is best to use on a gasoline engine? What do you prefer? Have you had any bad experiences with certain brands? : r/mechanics     TOPICS Go to mechanics r/mechanics r/mechanics Is Supertech oil worth it? Our review covers everything from manufacturing to performance for this cost-effective engine oil. Some manufacturers cut corners and produce a low-quality product that will provide you with less protection and lead to costly repairs down the line. But not all of them were created equal. Want more info on oils? Mobil Delvac, Rotella T6, Royal Purple, Schaeffer’s, Hot Shot’s and Amsoil. I assume back when synthetics first started coming out that engines living on thicker oil probably had issues but I have a hard time imagining that this is true for modern engines. So, it comes to classifying bad motor oil brands to avoid. cx3gik, wcfc, 3l1ib, nqwev, tsq9c, kn1b8a, eyd2ec, zzo2, wxack, 5s0x,