Corn Head Grease vs 00 Grease: Which One Should You Use?

The comparison between corn head grease vs 00 grease comes up all the time, especially when someone is trying to fix a leaking gearbox. Both are softer than regular grease. Both can flow better than No. 2 chassis grease. And both are used in farm and industrial equipment.

But they are not always the same.

If your equipment calls for corn head grease, you should not automatically assume 00 grease is a perfect replacement. The difference may look small, but inside a gearbox, consistency matters.

What Is Corn Head Grease?

Corn head grease is usually an NLGI 0 grease. John Deere’s official listing for AN102562 corn head grease states that it meets NLGI grade 0 and John Deere standards JDMJ13A5, J13E6, and J25A. Deere Shop

NLGI 0 means it is soft, but not as soft as 00 grease. It can move inside a slow-speed gearbox while still staying in place better than oil.

That is why corn head grease is commonly used in corn head row-unit gear cases and other slow-moving gearboxes.

What Is 00 Grease?

00 grease is softer than NLGI 0 grease. It is often used where a very low-consistency grease is needed. Some 00 greases are used in gearboxes, steering boxes, cotton picker systems, and centralized lubrication systems.

For example, Tractor Supply lists a Super S #00 Cotton Picker Spindle Grease as a low-consistency grease with lithium thickener, rust inhibitors, and oxidation inhibitors for agricultural and industrial applications that call for a low-consistency product. tractorsupply.com

That does not mean it is the same as corn head grease. It means both products live in the “soft grease” category, but they may have different thickness, thickener chemistry, and intended use.

Corn Head Grease vs 00 Grease: Main Difference

The main difference is consistency.

Lower NLGI numbers mean softer grease. So, in a simple sense, 00 grease flows more easily than corn head grease.

That can be good in some applications, but bad in others. If the grease is too soft, it may leak more easily. If it is too thick, it may not move back into the gears.

Is 00 Corn Head Grease Real?

Some people search for 00 corn head grease, but many well-known corn head greases are actually NLGI 0, not 00.

That matters because “corn head grease” is not just a casual phrase. It usually refers to a semi-fluid grease formulated for corn head gear cases, and John Deere’s common product is NLGI 0. Deere Shop

If you see a product labeled 00, read the label carefully. It may be a cotton picker grease, gearbox grease, or semi-fluid grease, but not necessarily a true corn head grease equivalent.

When 00 Grease Might Work

00 grease vs corn head grease can be acceptable when the equipment manual allows NLGI 00 grease or when the gearbox specifically needs a softer semi-fluid lubricant.

A 00 grease may be useful in:

• certain steering boxes

• some low-speed gearboxes

• centralized lubrication systems

• cold-weather low-consistency applications

• equipment that specifically calls for NLGI 00

But if your machine says NLGI 0 corn head grease, then 00 is not automatically the right choice.

When Corn Head Grease Is Better

Corn head grease is usually better when the equipment calls for NLGI 0 grease or when you need a product that is soft but still has some body. It may stay in place better than 00 grease in worn gearboxes.

Royal Manufacturing describes its corn head grease as an NLGI 0 product designed for corn head gear cases and other slow-moving gearbox applications, with leak control and water washout resistance. Royal

That is exactly the type of situation where corn head grease makes sense.

Can You Mix Corn Head Grease and 00 Grease?

Mixing grease is not ideal unless you know the thickeners and base oils are compatible. Some corn head grease products are polyurea-thickened, while some 00 greases may use lithium thickener. Product chemistry can vary by brand.

If the gearbox already has unknown grease inside, the best practice is to clean it out before adding a different type. In the real world, many people top off gearboxes, but from a maintenance standpoint, clean and refill is better.

Which One Should You Use?

Use corn head grease when:

• your manual calls for corn head grease

• the gearbox requires NLGI 0

• you are servicing a corn head row-unit gearbox

• you want semi-fluid grease with better leak resistance than oil

Use 00 grease when:

• your manual calls for NLGI 00

• the application needs a softer lubricant

• the product is approved for that gearbox

• cold flow is more important than staying power

The corn head grease vs 00 grease debate is not about which product is better overall. It is about which one matches the application.

Corn head grease is usually NLGI 0 and works well in corn head gear cases and slow-moving gearboxes. 00 grease is softer and may work in applications that specifically call for a lower-consistency grease.

If you are unsure, do not guess. Check the manual, match the NLGI grade, and choose the lubricant designed for the job.