Synthetic lubrication, explained straight.
Williamson Lubricants helps you work out what your engine, gearbox or equipment actually needs — then hands you to AMSOIL to order it. No parts counter, no upsell, no inventory. AMSOIL ships direct nationwide.
Clinton, Mississippi · 769.770.3261
Start here
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Start with the machine
Find products for my vehicle
Fifteen equipment types, each pointing at AMSOIL's own lookup so the answer comes from your year, make and model rather than a guess.
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Start with the product
Shop the line
Twenty categories, from gasoline motor oil to bypass filtration, with a short honest explanation of what each one is for.
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Buy at a better price
Become a Preferred Customer
AMSOIL's membership for people who buy more than once a year. Reduced pricing on every order and free shipping on qualifying totals.
How this works
Three steps, and only one of them involves me.
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Work out what you need
Use the vehicle lookup, read the category pages, or call and describe the machine. I will tell you what I would run and why — including when the cheaper option is fine.
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Order from AMSOIL
Every link here goes to AMSOIL's own store with my Dealer number attached. You pay AMSOIL, and AMSOIL ships it to you factory-direct.
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Call me when something changes
New truck, new equipment, a drain interval that needs setting on evidence rather than habit. That conversation is the part I am actually here for.
Start with what you drive or run
Each of these opens AMSOIL's lookup for that equipment type, so the fitment comes from their data and not from me remembering it.
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Car & Light Truck
Daily drivers, commuters and half-tons. Start with the lookup — it reads your year, make and model and tells you exactly which oil, filter and fluids fit.
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Turbodiesel Truck
Power Stroke, Duramax and Cummins. Towing heat and long drain intervals are where synthetic diesel oil earns its money.
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Heavy-Duty Diesel Equipment
Class 8, excavators, loaders and anything that bills by the hour. Bypass filtration and oil analysis are the two levers that move cost per hour.
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Agriculture
Tractors, combines, hydraulics and PTO gear. Long seasons, dusty air and equipment that cannot afford a breakdown at harvest.
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Power Equipment
Mowers, generators, chainsaws, pressure washers, string trimmers. Small engines run hot and get neglected — the oil is doing more work than you think.
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V-Twin Motorcycle
Harley-Davidson and other big twins. Air-cooled, high-load, and unforgiving of thin oil in August traffic.
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Street & Adventure Motorcycle
Metric sport, touring and ADV bikes with a wet clutch. JASO MA2 matters here — the wrong oil will make the clutch slip.
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Dirt Bike
Motocross and trail. Short, brutal duty cycles, and a gearbox sharing oil with a clutch that lives at redline.
Or start with the product
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Additives & chemicals
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Shop & industrial
Three levels of AMSOIL synthetic oil
Every AMSOIL gasoline motor oil sits in one of three tiers. The difference is how long it is built to last between changes — the wear protection underneath is synthetic in all three.
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Matches your manufacturer's interval
OE
Built to the drain interval your vehicle's manufacturer already recommends — a straightforward synthetic upgrade over conventional oil at the interval you already follow.
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Up to 20,000 miles
Extended-Life
AMSOIL's mid-tier synthetic — up to 20,000 miles or one year, whichever comes first, in normal service in personal vehicles. Fewer oil changes without stepping up to the flagship line.
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Up to 25,000 miles
Signature Series
The top of the AMSOIL line. Built for the extra stress of turbocharging, direct injection and extended intervals — up to 25,000 miles between changes, with AMSOIL's strongest wear and deposit protection. Check AMSOIL's product page for the exact conditions the interval assumes.
Buying for a business, not a driveway?
AMSOIL runs four different account programs, and the right one depends on whether you use the product, install it for customers, sell it over a counter, or want to build a business of your own. There is no contract and no inventory minimum on any of them.
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Commercial
You run the equipment. Fleets, contractors, farms, landscape crews.
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Installer
You put it in someone else's vehicle. Garages, quick lubes, powersports dealers.
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Retail
You sell it over a counter. Parts stores, hardware stores, dealerships.
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Dealer
You want to run the business yourself, the way I do.
Talk to a person in Clinton
Williamson Lubricants is run from Clinton, Mississippi. I do not carry inventory and I do not take your payment — AMSOIL does both. What I do is answer the question before you spend the money.