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Independent AMSOIL Dealer · Sisters, Oregon · Since 2006 541-316-9643  ·  mark@ossingersnw.com
High Desert Synthetics logo High Desert SyntheticsIndependent AMSOIL Dealer
Two Toyota Tundra pickups parked on red cinders at sunset at Cinder Butte, Central Oregon
Independent AMSOIL Dealer · Sisters, Oregon

Central Oregon's local source for AMSOIL synthetics.

Motor oils, greases, filters and fluids for the trucks, diesels, bikes, boats, sleds and equipment that work hard out here. Stocked locally in Sisters, backed by 20 years of first-hand experience.

2006Using and selling AMSOIL
LocalInventory on hand in Sisters
3 countiesDeschutes, Jefferson & Crook
1 callReal answers from a real person
AMSOIL ATV/UTV Oil Change Kit on a red ATV
Featured · ATV & UTV

Oil change in a box for your ATV or side-by-side.

AMSOIL ATV/UTV Oil Change Kits come with the right amount of AMSOIL Synthetic ATV/UTV Motor Oil, a filter, and any needed O-ring and washers, for many Polaris and Can-Am models. In stock here in Sisters.

Why synthetic

Built for the swings Central Oregon throws at an engine.

Below-zero mornings in January, 100° days towing over Santiam Pass, dust on every trail. Here's what synthetic lubricants are designed to deliver.

Wear protection

Synthetic base oils and additive chemistry are formulated to protect critical engine parts against wear.

Hot & cold performance

Synthetics flow readily at cold start-up and resist thermal breakdown in high heat and under heavy load.

Cleaner engines

Formulated to resist sludge and deposits, helping keep engines and components clean.

Product features and performance claims are those of AMSOIL INC. For complete product details and specifications, see AMSOIL.com.

On the shelf in Sisters

Real inventory, ready for local pickup.

I keep popular motor oils, oil change kits, fuel additives and filters in stock at the shop. Call or text to check what's on hand and set a pickup time.

High Desert Synthetics shop building in Sisters with an AMSOIL sign out front
The shop, Sisters, Oregon
Three bottles of AMSOIL synthetic motor oil on a vehicle bumper
AMSOIL Gasoline Stabilizer and Quickshot bottles on the shelf
AMSOIL ATV/UTV oil change kit next to a red side-by-side
Pouring AMSOIL 0W-40 Signature Series into an engine through a yellow funnel
Mark Ossinger in an AMSOIL Racing shirt holding AMSOIL Dirt Bike oil next to a race bike
Meet your dealer

Twenty years of running it ourselves.

We started using AMSOIL in 2006, when our son was racing competitive motocross. His race bikes ran it for multiple seasons without needing a top-end teardown due to wear. It's been the only oil we use ever since.

Today I keep AMSOIL motor oils, greases and filters in stock here in Sisters, and I'm happy to help you figure out exactly what your car, truck, toy or tractor needs. I also repair and restore vintage cars, trucks and Jeeps (my own '79 CJ5 just got a full reseal), so I've got plenty of opinions about old iron too.

"If it has an engine, a gearbox or a grease fitting, call me. We'll get it sorted."

Ways to buy

Choose what fits you.

All online orders are placed through the official AMSOIL online store. Locally, call or text me to arrange pickup from inventory in Sisters.

Preferred Customer

AMSOIL's membership program for regular users. Wholesale pricing is available only through registration as a Preferred Customer. Full details on AMSOIL.com.

Program details →

Retail purchase

Order anytime from the AMSOIL online store, with no membership needed.

Shop AMSOIL.com →

Buy locally

Need it today? I keep popular products on the shelf in Sisters. Call or text to check stock.

541-316-9643 →

Business accounts

Shops, fleets, farms, ranches and retailers can set up a commercial or retail account.

Learn more →

Not sure what your rig takes? I'll look it up with you.

Call 541-316-9643 Use the Product Guide