Q: Are Two Lubricants With Virtually The Same Performance Specifications Essentially Interchangeable?

Entry by Isel Staff

Category: Q&A

Puzzle Pieces

A: Not necessarily. Even if they have the same performance characteristics, they may differ in chemical composition. Chemical compatibility is a critical consideration when switching or topping off one lubricant with another.

A lubricant can be formulated with any of a variety of base fluids, additives and, in the case of greases, thickeners. If incompatible lubricants are mixed in any ratio, adverse chemical reactions may occur between the additives, base oils, thickeners or any combination thereof. Any or all lubricant properties could be adversely affected, and performance could be unreliable to severely detrimental.

Before switching from one lubricant to another, always check and confirm compatibility with the lubricant manufacturer or supplier. If for any reason the information is not available or you have any doubt, you should treat the products as if they are incompatible — make sure that the old lubricant is thoroughly flushed from the system before introducing the new lubricant.

Isel can help you avoid cross-contamination issues. Our knowledgeable experts can help you identify products that are ideally compatible with those you presently use. Contact us today for assistance. Alternatively, try the Isel Lubricant Finder, our convenient online cross-reference tool.

Relevant Entries in this Category that May Interest You:


April 2020 On April 29, 1980, the first wish was granted.  A seven-year-old boy who yearned to be a police...

Read More
Isel to Exhibit at the 2020 IIAR Conference and Heavy Equipment Expo

Isel will be exhibiting at the annual IIAR Conference & Heavy Equipment Expo from March 15th through the 18th ....

Read More
Isel Joins The Fight Against Breast Cancer

January 2020  Isel kicks off donation drive to support breast cancer research. JACKSONVILLE, FL — Isel, has launched a donation...

Read More

Latest Articles

Avoid Oil Sampling Pitfalls

Entry by Isel Staff

Category: Technology

Isel Sample Kit
Oil analysis is a valuable tool for determining the condition of lubricating oil and the equipment it lubricates. It is best used as a...

Isel Launches NXT Refrigeration Line

Entry by Isel Staff

Category: Q&A

For more than 23 years, Isel’s unique approach to lubricant manufacturing has combined detailed knowledge of refrigeration systems with one of the most agile...


Entry by Desiree Amaro

Category: News

April 2020 On April 29, 1980, the first wish was granted.  A seven-year-old boy who yearned to be a police officer “to catch bad guys”...