Can grease that’s labeled “Marine Grease” with a NLGI #2 & Calcium Sulfonate label be for marine purposes. I thought that only Aluminum Complexes greases were to be used for that. My second question would that same “marine” grease that’s Calcium Sulfonate based be compatible with an Automotive Grease that’s is also derived from a Calcium Sulfonate base & that also has a NGLI #2 label but is red in color?
I have started using a Calcium Sulfonate grease on washing machine shaft seals, Lucas Marine Grease. Its Base oil's viscosity is lower than that of most other greases. What would be the most suitable product for the application?
great work. How do we convert shear unstable polyurea grease to shear stable polyurea grease? is there any shear stability enhancer for conventional polyurea(shear unstable)?? What makes shear stable polyurea compatible with most of the soap thickened greases??? Please, we would be fortunate to get it from you
My understanding (and I’m no expert here) is that it’s a relative term. As an example, the di-ureas appear to be more shear stable than the tetra-ureas. I’ll have to do some more research.
@@LubricationExplained thanks lot. I too certainly not expert in greases. What I understood from your comment is, structural stability has relationship with thickener chemistry. I guess, tetra ureas must be more polar because of four urea group and only two end oil soluble(hydrophobic nonpolar) alkyl groups. so it must have less cohesiveness with base oil(nonpolar). OR there may be effect of bigger polar head and smaller nonpolar tails on the fibrous/micellar structure of thickener in case of tetraurea. ok. then by increasing alkyl chain length can we make tetra-ureas shear stable??
What's the better grease for hardwater wash down environment, e.g. high bicarbonates and salt in water and sodium hypocholrite? Aluminium or calcium sulphanite based or other?
