Car manufacturers typically recommend a tune up schedule for their vehicles, especially for their older models. Most cars need a tune up after 10,000 to 20,000 miles, though newer models can go up to 100,000 miles before needing one. The point here is that at some point, you will have to bring your car in for a tune up if you drive it far enough. Many car owners, however, either forget or neglect to get their vehicle tuned up as scheduled. As long as every aspect of their car, from the braking system to their most recent car audio installation, appears to be working well, a tune up will likel ..read more

How often you should change front and rear differential fluid depends on your vehicle, driving conditions and differential fluid quality. That’s a vague answer, but it’s true. If you drive your truck primarily on the highway in temperate conditions and rarely tow or haul, you likely don’t need to change front or rear differential fluid very often. But, if you tow a trailer or haul supplies frequently and the temperature fluctuates as wildly as your health insurance premium, then you need to change differential fluid more often. The only way to know the exact mileage interval is to check your o ..read more

AMSOIL offers a full line of premium-quality synthetic diesel oils, but which AMSOIL diesel oil is right for your application? We break it down. Signature Series Max-Duty 5W-30 Synthetic Diesel Oil MIXED FLEETS Signature Series 5W-30 is a versatile oil aimed at mixed fleets of diesel and gasoline vehicles, simplifying maintenance and lubricant inventory. · 6X more engine protection1 · Outstanding cold-temperature performance · Extended-drain capability maximizes convenience and minimizes downtime Signature Series Max-Duty 0W-40 Synthetic Diesel Oil VEHICLES ..read more

Cars, trucks, motorcycles, ATVs, UTVs, snowmobiles, marine outboards, personal watercraft, small engines, heavy-duty commercial vehicles… If you own any of these, you’re going to need oil to go with it. And, with all the different types and viscosities of oil out there, it can be confusing to know which AMSOIL product to use.  AMSOIL offers an easy solution. With AMSOIL product guides, you can look up your vehicles and equipment and find exactly which AMSOIL products to use. Just select your type of vehicle, year, make, model and ..read more

You’re now part of the worldwide Subaru Community. You wave to other WRX and turbocharged Subaru owners on the road. And you can’t wait to dive into the world of Subaru mods. So, where should you start? There’s an endless amount of aftermarket support for these cars, so choosing what mods to perform can be tough if you’re new to the Subaru platform. Here are our top five mods for your turbo Subaru (WRX, STI, Legacy GT, Forester & Outback XT). 1. Tune, tune, tune A proper tune specific to your car, engine and modifications is essential to the health and performance of your S ..read more

Motor oil today is made of two fundamental components: base oil and additives. But that wasn’t always the case. In the 1930s, someone decided to add wax modifiers to base oil to address the problem of wax residue after the refining process. Thus began the practice of putting additives in motor oil to augment base oil performance. In this post, we’ll look at the different chemical additives in motor oil. These additives enhance the lubricant by performing two critical functions: lessen destructive processes and enhance the beneficial properties of the base oil. Additives in motor oil: job desc ..read more

Low engine oil can heighten the risk of engine wear and cause what little oil is available in the sump to breakdown sooner, creating harmful deposits. That’s one reason it’s vital to check your oil frequently. Here are a few common reasons your engine oil might be low and what you can do about it. Common reasons for low engine oil Leaking gasket or seal Your engine has several gaskets and seals that provide an oil-tight seal between metal parts. If it weren’t for the valve-cover gasket, crankshaft seals, oil-pan gasket and other gaskets and seals, oil would continually leak out betwe ..read more

Enthusiasts love to modify their vehicles to make more power. Lists of top-10 mods often include nitrous, a performance exhaust, an engine tune, upgraded intake and more. But they never include upgrading your motor oil to handle all that power. Let’s look at why you should upgrade your oil – and how two of the best available stack up: AMSOIL vs Mobil 1. Horsepower riding on a sheet of paper Your engine – and the time, money and effort you’ve poured into it – rely on an oil film that’s thinner than a sheet of paper.  Adding horsepower increases rpm and engine stress, placing even mor ..read more

Not long ago, most people changed oil every 3,000 miles (4,800 km). No matter what. Well, except AMSOIL users who took advantage of the 25,000-mile (40,200-km)/1-year drain interval of our top-tier synthetic oil. Then oil life monitors (OLM) came along and changed the game. While first-generation oil life monitors were simple, mileage-based systems that prescribed fixed oil-change intervals regardless of operating conditions, today’s systems are far more sophisticated. They monitor several conditions known to reduce oil life, enter those values into an algorithm and return the oil-li ..read more

Adequate diesel fuel lubricity is essential for protecting the highly engineered components in modern diesel engines, particularly high-pressure common-rail (HPCR) engines, which are subject to increased wear and deposits that interfere with an optimum spray pattern, reducing power and fuel economy. Be sure to keep your engine running strong with the best diesel fuel additives. ULSD provides less lubricity Diesel fuel has traditionally had high lubrication properties, but the desulfurization process that allows fuel to meet modern ultra-low-sulfur diesel (ULSD) requirements also strips it ..read more