In the S30 service manual Nissan refer to it as "grease reservoir" (component number 13 page ST-10). On page ST-15 Instruction # 27 in the right column, they write "Fill the grease reservoir with multipurpose NLGI No. 0 grease, and attach the reservoir to the rack housing".

The key might be the specification of No. 0 grease.

https://petroleumservicecompany.com/nlgi-0/#:~:text=NLGI%200%20grade%20grease%20is,lubrication%20tasks%20in%20specific%20applications.

NLGI 0

The National Lubricating Grease Institute (NLGI) is a not-for-profit organization that serves the lubricating grease industry. The NLGI consistency number, sometimes referred to as NLGI grade, refers to the relative hardness of a grease used for lubrication as specified by the institute's standards. NLGI 0 grade grease is a very soft grease about the consistency of brown mustard.

Grease consistency is a major contributor (in combination with additive technology, base fluids, and types of thickeners) to the performance of a grease and how well it will execute lubrication tasks in specific applications.

If I recall correctly, the grease we all use in our grease guns is No. 2.

B'laster Products

MULTI-PURPOSE GREASE - B'laster Products

Formulated as a high-quality lithium grease that provides excellent long-lasting lubrication and performance. It resists water and protects against rust and corrosion in applications where speeds and

Dogpile! (Word used by kids when they tackle another kid and many other kids jump on). I learned more about something that I was vaguely aware of. Heat probably plays a part also.

https://www.fluoramics.com/what-is-nlgi/07/

More learning. Sorry if I'm overdoing it.

One last thing - if you've ever stored a tube of grease or a grease gun for an extended period of time then you've probably found a puddle of oil in the vicinity afterward. The oil can separate from the thickening agent. So, a chunk of grease is essentially a delayed-release oil reservoir for anything below it.

Okay, thanks for the entertainment.

Interflon

What is the difference between oil and grease?

Learn about the difference between oil and grease.

Edited December 23, 2025Dec 23 by Zed Head

41 minutes ago, SpeedRoo said:

In the S30 service manual Nissan refer to it as "grease reservoir" (component number 13 page ST-10).

Yes, I have seen that. On the other hand, from Nissan (Japan) parts manual C-235:

*343266 - 0501P - RESERVOIR - oil.

Worth noting that they were specified for other Nissan models before the S30.

25 minutes ago, Zed Head said:

Sorry if I'm overdoing it.

Maybe try - if you possibly can - to keep your powder dry. Not doing so can lead to a damp squib (cf 'Cad' plating).