1- Make sure the number matches! Do you need a #1, #2, etc? The numbers indicate the texture of the grease. #2 is the most common grease. As you go up from #2 the texture gets more solid and paste-like, as you go down, the texture of the grease gets wetter and more slippery. (How the NLGI classifies this stuff gets a little confusing - the wikipedia article here gives a pretty solid quick overview)
2- Make sure you are matching the base stock for the grease! If you need say a lithium based grease, its very important you get a lithium grease and not say a calcium or aluminum based product.
3- Make sure your grease meets the NLGI (National Lubricating Grease Insititute) parameters such as GC-LB-GA-LA-GB. (The website for NLGI goes into more detail, if you need more information, you can visit: https://www.nlgi.org/ )
4- In most cases, the color of the grease doesnt actually mean much (red vs blue). Where color DOES matter is when you see a "gray grease". This means the grease has a moly (short for molbdenum) additive in it. Most major off road equipment like excavators, skid steers, cranes recommend a moly grease. Major OEMs like Caterpillar, John Deere, Case, and Komastu also recommend moly grease ONLY in their equipment.
5- If all else fails - Ask somebody! Contact myself of one of our other fully trained lube experts at Dennis K Burke, we would be happy to answer any questions you may have about what product you need for your specific job.
*You can also get more in depth spec and MSDS info on our website by going here -Fleetline Lubricants - Specs/MSDS *