How to Use the AMSOIL Product Lookup (and Save It in MyGarage)

What the AMSOIL Product Lookup Actually Is

The AMSOIL product lookup — officially the AMSOIL Vehicle Lookup Guide — is the search tool published at amsoil.com/guides/. It queries AMSOIL’s product application database: a curated mapping between vehicles and the AMSOIL products that meet each vehicle’s OEM fluid specifications.

In plain English: you tell it what you drive, it tells you which AMSOIL oil, fluid, filter and grease the manufacturer-required spec demands. No guessing at viscosity. No hoping the oil on the shelf at the parts store “is close enough.”

The recommendations aren’t based on a generic viscosity chart. They’re based on:

• API service categories (SP, SN PLUS, CK-4, FA-4, etc.)
• ILSAC fuel-economy categories (GF-6A, GF-6B)
• OEM specifications (dexos1 Gen 3, dexos R, Ford WSS-M2C947-B1, Chrysler MS-6395, Allison TES 295, GM DEXRON-VI, Toyota WS, Honda DW-1, Subaru HCF-2, ZF Lifeguard, Mercon LV, etc.)
• ACEA European sequences (A3/B4, C2, C3, C5, E6, E9)
• JASO motorcycle categories (MA, MA2, MB)
• NLGI grease classifications (GC-LB, HPM, etc.)
• SAE viscosity grades

That’s the difference between “the right oil” and “a 5W-30.” Two engines can both take 5W-30 and still require fundamentally different base-oil chemistry.

How to Use the AMSOIL Lookup in 30 Seconds

1. Open the lookup. Go to amsoil.com/guides/. No login required.
2. Pick your equipment type. Car / light truck, motorcycle, ATV, UTV, snowmobile, PWC, outboard / inboard marine, lawn & garden, or industrial equipment. The vehicle selector that appears next is tailored to the equipment type.
3. Enter year / make / model. Add the engine or displacement if the tool asks — this narrows the result to the correct spec (which matters a lot on multi-engine platforms where a 3.5L and a 3.5L EcoBoost take entirely different oils).
4. Review the recommendations. The tool returns every AMSOIL product that meets an OEM spec on your vehicle. For passenger vehicles, that’s typically motor oil, transmission fluid, differential fluid, power-steering and brake fluid, grease, and filters. For powersports and marine, it adds 2-stroke / 4-stroke categories, drive-line lubricants and fuel additives.
5. Pick your product line. If the tool returns more than one oil, see the “Why do I see two oils?” section below.

Why You See Two Oils on Most Late-Model Vehicles

For most late-model cars and light trucks the lookup returns two AMSOIL product lines that both meet the OEM spec:

• AMSOIL Signature Series 100% Synthetic Motor Oil. AMSOIL’s flagship. 75% more wear protection than required by the ASTM D6891 industry-standard test and proven drain intervals up to 25,000 miles or 1 year in severe service and up to 25,000 miles or 1 year / whichever comes first for normal service with documented service records. Best when you want maximum protection and extended-drain capability.
• AMSOIL XL 100% Synthetic Motor Oil. Balanced protection at a lower price point, rated for 12,000 miles or 1 year / whichever comes first. Ideal for owners who want a high-quality synthetic at a more moderate service interval.

Both meet the spec your manual requires. The choice is about how long you want to go between oil changes and how much protection you want under load — not about compatibility.

For diesel pickups, off-road powersports, marine or industrial applications, AMSOIL often returns a different line pair (Signature Series Max-Duty for diesel, DOMINATOR or Interceptor for powersports, etc.). Same principle: every product returned meets an OEM spec.

What the Lookup Will Recommend for You

For a typical 4WD light-duty pickup, a single lookup returns:

• Motor oil (viscosity and spec)
• Oil filter (AMSOIL EaO or Ea)
• Air filter (EaA)
• Automatic transmission fluid (e.g., AMSOIL Signature Series ATF for most GM / Ford / Chrysler autos, or Fuel Efficient LV ATF for newer 8- and 10-speed transmissions)
• Transfer case fluid
• Front & rear differential gear oil
• Power-steering fluid
• Grease for chassis and wheel-bearing service
• Fuel additive recommendation (typically AMSOIL P.i. for combustion-chamber cleanup every ~4,000 miles)

For motorcycles the lookup returns a JASO-matched engine oil, primary-chaincase lube (for Harleys), transmission fluid (again, for Harleys that use separate oil for the trans), fork oil and grease. For 2-stroke powersports it returns pre-mix oil recommendations and the right AMSOIL injector oil for oil-injected machines.

The point is that a single 60-second lookup replaces flipping through the owner’s manual for every fluid point on the vehicle and cross-referencing specs against whatever the parts-store app suggests.

Where the Lookup Beats Generic Viscosity Charts

The AMSOIL lookup is only as useful as the data behind it. Three specific places it beats a generic chart:

1. Direct-injected engines that require detergent-heavy oils. Modern GDI engines (most turbo gas engines built after 2015) are unforgiving about oil quality — LSPI (low-speed pre-ignition) is a documented failure mode that the wrong oil accelerates. API SP and ILSAC GF-6A address LSPI. The AMSOIL lookup returns only oils that meet the correct category for the engine.

2. European cars with low-SAPS (ACEA C-series) requirements. Running a standard API SP oil in a BMW, VW, Audi, Mercedes or Porsche that requires ACEA C3 (or a manufacturer spec like BMW LL-04, MB 229.52, VW 504.00/507.00) will eventually plug catalytic converters and diesel particulate filters. The AMSOIL lookup routes European vehicles to European Car Formula oils that meet the low-SAPS spec.

3. Newer GM engines on dexos R. The dexos R specification was introduced for newer high-output V8s and is fundamentally different chemistry than dexos1 Gen 3. Pouring a dexos1 oil into a dexos R engine is not a substitution — it’s a warranty exposure. The lookup routes those vehicles correctly.

Generic charts can’t do any of this. They print a viscosity and a temperature range and call it done.

Use AMSOIL MyGarage to Skip the Lookup Next Time

Lookup By OEM Spec or Viscosity (Advanced)

If you already know the spec your manufacturer requires — for example you’re running a dexos R V8 and you know the code from your owner’s manual — you can also search AMSOIL directly by OEM specification or by SAE viscosity. This is useful for:

• Fleet managers standardizing across multiple vehicle years
• Owners cross-referencing a manufacturer bulletin against AMSOIL’s product line
• Shops sourcing a spec-matched oil without needing a specific year / make / model

From amsoil.com you can filter motor oils by both grade and specification. The result is the same kind of OEM-matched list the vehicle lookup returns — just arrived at from the spec side rather than the vehicle side.

What the Lookup Does Not Replace

Three things the lookup is not a substitute for:

1. Your owner’s manual. AMSOIL’s database is very good. Your owner’s manual is authoritative. If the two disagree (rare, usually around very new model years), trust the manual and email AMSOIL or your dealer with the discrepancy so the lookup can be updated.
2. Correct drain intervals. The lookup tells you what to run. It does not set your service interval — that’s a function of oil quality, driving conditions, fuel dilution, and the OEM’s guidance. AMSOIL publishes proven drain intervals for each product line separately.
3. Diagnosing a problem. If the engine is making a noise, burning oil, or has a check-engine light, the right oil is part of the fix but not the whole fix. Call us if you want a conversation about what’s actually wrong.

Ready to Look Up Your Vehicle?