Air compressor lubricants and all other members of this liquid “family” share several key features that react to temperature fluctuations: viscosity, pour point, viscosity index, and base oil. Viscosity is the liquid’s resistance to flow, while the pour point concerns the lowest temperature at which the lubricant will move. Viscosity index (VI) refers to the lubricant’s viscosity in relation to temperature changes. If you are shopping for air compressor lubricants or those for other projects, learn how they react to temperature changes before reviewing your options.

How Do Temperature Fluctuations Affect Lubricants?

Cold Temperatures

Cold weather can chemically alter, degrade, or separate lubricants with low VI rates. Oil may become stiff and unable to circulate properly, resulting in equipment and device malfunctions such as engine lockups. If the oil features a blended base oil, it can separate into phases when the temperature drops. Lubricants can also morph into wax or gel-like substances in cold weather if they are made with paraffinic base stocks. Additionally, additives in the lubricants may settle in reaction to frigid temperatures, leaving deposits behind.

Hot Temperatures

When lubricants exceed their base activation temperatures, or become too hot, they start to break down. As per the Arrhenius Rate Rule, lubricants oxidize or degrade twice as fast for every 18-degree Fahrenheit change in temperature. Too-hot lubricants cause a variety of problems, such as oil film collapses that increase scuffing and abrasion rates. Other issues include carbonaceous gum and resin formation from oil exposed to hot equipment and device surfaces, quicker corrosion on seals and filters, and toxic additive evaporation into the atmosphere. Also, many microbial contaminants enjoy warm temperatures and are more likely to multiply. Oil and grease lubricants additionally leak at a faster rate when temperatures warm up.

Keep this information in mind while you shop for air compressor lubricants from Industrial Compressor Supplies in Maryland Heights, MO. Specializing in air compressor lubricants, supplies, replacement parts, and accessories, this company ships worldwide and offers 24/7 availability to clients in the St. Louis area. Call (877) 426-3131 today with questions, and review the inventory online. Get tips and the latest product information on Facebook.