Synthetic Motor Oil Shortage: Why Oil Change Prices Are Rising and What Drivers Should Do Now

Synthetic motor oil shortage stories are spreading fast, and there is a real supply-chain issue behind the headlines.

The concern centers on Group III base oils — highly refined base stocks used in many modern synthetic motor oils, transmission fluids, and other lubricants. When Group III supply tightens, finished synthetic lubricant prices can rise quickly.

That does not mean every shelf will suddenly be empty. For most drivers, the more likely impact is higher prices, fewer promotions, reduced selection, temporary out-of-stocks on specific viscosities, and longer replenishment times.

The smart move is simple: stay current on maintenance, avoid panic buying, and order the correct oil before you are overdue.

Why Synthetic Motor Oil Is Under Pressure

Finished lubricants are mostly base oil. The Independent Lubricant Manufacturers Association says base oils make up roughly 75% of finished crankcase lubricants and can make up as much as 98% of some industrial lubricants.¹

That matters because when base oil supply tightens, the pressure flows directly into finished lubricants. The current issue is not just one refinery or one brand. It is a broader supply-chain problem affecting the raw materials used to make many synthetic lubricants.

ILMA has identified several overlapping pressures:

1. Persian Gulf Group III supply disruption. ILMA says Pearl GTL in Qatar, ADNOC in the UAE, and BAPCO in Bahrain supply roughly 44% of U.S. Group III base oil.¹
2. Shipping-route uncertainty. ILMA’s customer brief specifically references disruption risk around the Strait of Hormuz, a critical shipping route for energy products from the Persian Gulf region.¹
3. South Korean supply may not fully cover the gap. ILMA says South Korean refiners supply roughly 30% of U.S. Group III base oil, but they rely on Middle East crude that is itself constrained.¹
4. Group II alternatives are also constrained. In some applications, manufacturers may be able to reformulate using different base-stock blends. But ILMA notes that Group II supply is also under pressure because high diesel margins can pull feedstock away from base oil production.¹

ILMA also announced in March 2026 that it was seeking immediate relief amid Group III base oil supply disruptions following attacks on energy infrastructure in the Middle East.² As of its May 2026 customer brief, ILMA did not expect conditions to fully normalize until at least mid-2027.¹ That timeline is the single biggest reason to plan one service ahead rather than wait.

What Drivers May Notice

The most likely consumer impact is not a complete disappearance of motor oil. It is more likely to show up as:

• Higher prices for synthetic oil changes
• Fewer retail discounts and promotions
• Temporary out-of-stocks on specific viscosities
• Slower replenishment at parts stores
• Tighter inventory at some repair shops and dealerships
• More shops recommending approved alternatives where the owner’s manual allows it

Axios reported that industry sources expect consumers to notice reduced selection, temporary out-of-stocks in specific viscosities, fewer promotional discounts, delayed replenishment, and higher prices rather than a broad disappearance of motor oil from retail shelves.³

Some newer, low-viscosity oils may be more vulnerable than common legacy grades. Axios specifically noted concern around ultra-low-viscosity oils such as 0W-8, 0W-16, and some 0W-20 products.³

What You Should Not Do

Do not stretch your oil change interval just because prices rise.

Motor oil protects moving parts, helps manage heat, suspends contaminants, supports engine cleanliness, and protects critical wear surfaces. Waiting too long can turn a manageable maintenance cost into a much more expensive repair.

Do not panic buy cases of oil you do not need. Keeping one future oil change on hand may be reasonable for do-it-yourself maintenance. Hoarding makes supply problems worse.

Do not use the wrong oil just because it is available. Viscosity matters, but viscosity alone is not enough. The oil also needs to meet the vehicle manufacturer’s required specification.

Can You Use a Different Oil Viscosity?

Sometimes, yes — but only if the owner’s manual allows it.

Many owner’s manuals list one preferred viscosity and may list alternate viscosities for specific temperatures or operating conditions. Other engines are much more specific because of fuel economy standards, emissions systems, turbochargers, timing systems, variable valve timing, hybrid operation, or OEM oil specifications.

Before switching from one viscosity to another, check:

• The owner’s manual
• The oil fill cap, if applicable
• The required OEM oil specification
• Warranty requirements
• Whether the engine is turbocharged, direct injected, hybrid, or known to be oil-sensitive

If your vehicle requires a proprietary specification such as GM Dexos®, Ford WSS, Chrysler MS, European ACEA, or a manufacturer-specific approval, the oil must meet that specification. A bottle with the same viscosity is not automatically equivalent.

Where AMSOIL Fits In

AMSOIL has publicly acknowledged market volatility through pricing language stating that prices reflect a temporary surcharge due to extreme market volatility caused by the conflict in the Middle East.⁴

National Synthetics also received additional supply-chain guidance through a recent AMSOIL dealer meeting. According to information shared with AMSOIL dealers during that meeting, AMSOIL reported no current supply constraints affecting its ability to meet anticipated production requirements for the foreseeable future. AMSOIL also indicated that it has secured raw materials needed for expected production demand.

As of publication, AMSOIL has implemented one temporary surcharge tied to market volatility, and National Synthetics has not been advised of any additional AMSOIL price increase scheduled at this time.

That does not mean the global supply issue is fake. The Group III base oil pressure is real. Many lubricant manufacturers are dealing with tighter supply, higher input costs, allocation pressure, and uncertain replenishment timelines.

The practical takeaway for AMSOIL customers is calm preparation, not panic buying:

• Buy what you need for upcoming maintenance.
• Order ahead if your oil change is coming due soon.
• Use the AMSOIL vehicle lookup or ask National Synthetics to verify the correct product.
• Do not substitute blindly based on viscosity alone.
• Confirm that any oil used meets the vehicle manufacturer’s required specification.

If Your Engine Calls for a 0W-40 or Dexos® R Oil

Not every vehicle uses a light, low-viscosity oil — and that matters during a shortage that hits the thinnest grades hardest. A growing number of high-output engines specify a 0W-40 that meets GM Dexos® R, General Motors’ premium specification for high-speed, high-load engines. GM’s own 6.2L V8 (L87) is a recent, well-publicized example where the specified oil moved to 0W-40 rather than 0W-20. We cover that case in detail in GM’s 6.2L V8 recall and why 0W-40 matters, and the broader standard in Dexos® R: the new motor-oil standard for high-performance engines.

For those applications, AMSOIL Signature Series 0W-40 (AZF) is engineered to meet and exceed the Dexos® R requirement. It carries a published high-temperature/high-shear (HTHS) viscosity of 3.76 cP — above the 3.5 cP Dexos® R minimum — along with API SP, Chrysler MS, and Nissan GT-R coverage.⁵

One caution that matters more than ever during a shortage: a 0W-40 is the right answer only if your engine actually specifies a 0W-40 or Dexos® R oil. If your owner’s manual calls for a Dexos® 1 Gen 3 0W-20, do not substitute a 0W-40 just because it is on the shelf. Verify your specification first — then order the grade your engine was built for.

Practical Advice for Drivers

Here is the smart move:

1. Check your next oil change date or mileage now. Do not wait until you are overdue.
2. Confirm the exact oil specification. Look at the owner’s manual, not just the viscosity printed on the oil cap.
3. Keep one oil change on hand if you maintain your own vehicle. One backup oil change is reasonable. Hoarding is not.
4. Use approved alternatives only. If your preferred oil is unavailable, use an alternative that meets the required specification.
5. Do not run low on oil. If the oil level is dangerously low, adding an oil of the correct viscosity and specification is better than driving with insufficient oil.
6. Order earlier than normal. If supply chains tighten further, waiting until the day before a trip, tow, or service appointment is a bad plan.

Bottom Line

The synthetic motor oil supply issue is real, but drivers should not panic.

The most likely short-term impact is higher prices and tighter availability on certain products, especially oils that rely heavily on constrained Group III base stocks. The right move is not to delay maintenance or clear the shelf. The right move is to verify the correct oil, plan one service ahead, and use products that meet the vehicle manufacturer’s requirements.

National Synthetics will continue monitoring AMSOIL availability and pricing. As of today, AMSOIL remains available through National Synthetics, ships direct from AMSOIL, and remains a strong option for drivers who want premium synthetic lubricants with accurate product guidance.

Frequently Asked Questions

References

1. Independent Lubricant Manufacturers Association — “Why Lubricant Prices Are Rising: The 2026 Global Base Oil Supply Crisis,” customer information sheet, updated May 11, 2026. ilma.org. Source of the 44% / 30% Group III figures, the 75% / 98% base-oil-content figures, and the mid-2027 normalization outlook.
2. Independent Lubricant Manufacturers Association — “ILMA Seeks Immediate Relief Amid Group III Base Oil Supply Disruptions,” March 13, 2026. ilma.org.
3. Axios — Kelly Tyko, “The next supply-chain squeeze may hit motor oil,” May 15, 2026. axios.com.
4. AMSOIL Inc. — 2026 temporary surcharge language tied to global supply disruptions and the Middle East conflict, as observed on AMSOIL.com product and lookup pages.
5. AMSOIL Inc. — Signature Series 0W-40 (AZF) published product data: HTHS viscosity 3.76 cP, and OEM coverage including GM Dexos® R, API SP, Chrysler MS, and Nissan GT-R.

All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. Dexos® is a registered trademark of General Motors; AMSOIL is an independent manufacturer whose Signature Series 0W-40 is formulated to meet and exceed the Dexos® R performance requirements.