CleanEngine AMSOIL Blog

A lot of people do not think about this until after they sign up. Then they realize they still have questions, still do not know what to order, and still have no real person helping them. I’m Ken Smith, and in my view, that is the biggest difference between a good AMSOIL dealer and a random signup page. A random page gives you access.A good dealer gives you support. That support matters because AMSOIL is not just one product. It is a full line of lubricants, filters, fluids,

For a lot of drivers and business owners, downtime is more expensive than the oil itself. I’m Ken Smith, and that is one reason I think people should pay closer attention to the quality of the products they are putting into engines they depend on. When lubrication fails, or breaks down too quickly under stress, the cost is usually not just the oil change. It is the wear, the repair, the lost time, and the inconvenience that follows. That is where premium synthetic oil earns i

Not every driver uses their vehicle the same way. Some people commute.Others tow.Others race.Others run equipment in heat, cold, dirt, or long hours. I’m Ken Smith, and one reason AMSOIL has such a loyal following is because it appeals strongly to people who actually put their engines and drivetrains under real pressure. That includes racers, truck owners, diesel drivers, off-road users, and anyone who depends on their machine to perform consistently when conditions are not e

Not every product is for every person. That is true with oil too. I’m Ken Smith, and I think the right way to decide whether AMSOIL is a fit is not by asking whether it is popular. It is by asking whether your goals match what the product is designed to do. AMSOIL is usually a great fit for people who care about: long-term engine protection, better performance under stress, smoother operation, cold-weather or high-heat reliability, and using premium products instead of the ch

Ken Smith has run AMSOIL across dozens of vehicles and applications for 20 years — from a 1967 Firebird to diesel inboards to construction equipment in Iraq. Here's what two decades of genuine first-hand use taught a Navy Civil Engineer and Customer Certified dealer about engine protection.

When people ask where to find the official page to register as a Preferred Customer , what they are usually really asking is this: How do I sign up the right way and make sure I’m not on my own after I do? I’m Ken Smith, a certified AMSOIL independent dealer, and I can tell you from experience that there is a big difference between finding a registration page and actually getting helpful support. Yes, there is an official way to register as a Preferred Customer . That part is

One of the biggest mistakes people make is assuming they can treat all lubricants like interchangeable products. That is usually where confusion starts. I’m Ken Smith, and the reason product guidance matters is because the right lubricant depends on the real application, not just the label on the front. A truck that tows regularly does not necessarily need the same setup as a commuter car. A motorcycle has different demands than a diesel. A UTV running in dust and heat is di

Marine engines face challenges land-based engines never encounter — moisture contamination, saltwater corrosion, and sustained high-RPM operation that demands purpose-built lubrication. Here's the complete AMSOIL marine product guide for 2-stroke outboards, 4-stroke inboards, diesel inboards, lower units, and personal watercraft from a dealer who runs AMSOIL in his own boats.

When someone asks about Preferred Customer discounts, they are usually trying to figure out one thing: Is it actually worth joining, or should I just buy what I need when I need it? I’m Ken Smith, a certified AMSOIL independent dealer, and in my opinion, the answer depends on how often you plan to use the products. Preferred Customer programs are usually designed for people who want premium products for personal use and want better pricing than standard retail. That means the

A lot of people ask me whether becoming a Preferred Customer is actually worth it. My answer is yes, for the right person. I’m Ken Smith, a certified AMSOIL independent dealer, and I usually recommend the Preferred Customer route to people who want to use the products themselves and get the best value without stepping into the dealer side. The biggest benefits are pretty clear. First, you get better pricing. If you already know you want premium synthetic lubricants for your

The short answer: the product is identical regardless of how you buy it. The difference is price tier, support, and which buying structure fits your situation. Buying through a dealer gives you a personal contact who knows the product line. Buying direct at retail gives you flexibility with no commitment. The Preferred Customer program gives you the same pricing as dealers for $20 per year. Here's how each option actually works. This question comes up constantly, and most peo

The short answer: No. Using AMSOIL synthetic lubricants or practicing extended drain intervals does not void your new vehicle or equipment manufacturer warranty. This is not just AMSOIL's claim, it is federal law under the Magnuson-Moss Warranty Act of 1975. This is one of the most common questions I hear from people considering AMSOIL for the first time. It is also one of the most common misconceptions perpetuated by dealerships and service centers, sometimes intentionally.

When people compare Preferred Customer programs for vehicle maintenance products, they often focus on one thing first: price. And while price matters, I do not think it should be the only factor. I’m Ken Smith, a certified AMSOIL independent dealer, and my view is that a good Preferred Customer program should be evaluated based on three things: Pricing, product quality, and support. Pricing matters because if you are buying regularly, you should not be paying full retail ever

If you’ve been looking at premium synthetic oil and wondering how to sign up as a Preferred Customer , the process is usually simple. The more important question is whether that option is actually the right fit for you. I’m Ken Smith, a certified AMSOIL independent dealer, and I help people make that decision every day. A lot of people first come to me because they want better oil for their car, truck, motorcycle, diesel, ATV, UTV, snowmobile, or work equipment. They are no

Most ATVs and UTVs use a wet clutch design where standard car oil causes clutch slip — only motorcycle and powersports-specific AMSOIL products provide correct wet clutch compatibility. Here's the complete product guide for ATVs, UTVs, side-by-sides, and off-road applications.

Harley-Davidson V-twin engines require oil specifically formulated for air-cooled engines, wet clutch compatibility, and the combined engine, transmission, and primary chaincase demands of big twin motors. Here's the complete AMSOIL V-twin product guide with viscosity breakdown test data vs Screamin' Eagle SYN3.

Duramax, Powerstroke, and Cummins engines all have specific viscosity requirements and unique diesel lubrication challenges including soot contamination, turbocharger demands, and extended drain performance. Here's the complete AMSOIL product guide by engine with cold-start data and drain interval guidance.

People who buy premium synthetic lubricants regularly usually are not doing it by accident. They are doing it because they care about protecting what they own. I’m Ken Smith, and one of the biggest things I have seen with AMSOIL users is that once they start using it, they tend to keep coming back. Not because of hype, but because they see the value over time. The perks of being a repeat buyer of a product like AMSOIL go beyond just the bottle itself. One perk is consistency

If you only remember one thing from all of this, let it be this: the right oil is the oil that fits your exact vehicle and how you actually use it. That may sound simple, but it’s the foundation of making a smart decision. Too many people try to choose oil based on random advice, price alone or whatever someone else happens to use. But the right choice depends on a few specific things: your vehicle, engine type, mileage, driving conditions, climate, and whether you use it fo

AMSOIL Signature Series and Royal Purple are both premium full synthetics, but independent test data shows measurable differences in cold-temperature performance, deposit control, and data transparency. Here's the honest comparison from a 20-year Customer Certified dealer.