ABSTRACT
The lubricant industry formulates the products to meet the performance requirements of different applications, which can range from severe low temperature fluidity specifications to high temperature oxidation resistances. The literature reports that the petroleum products might be re-qualified for an additional storage period after the satisfactory quality testing (Pirro and Wessol, 2001). The lubricating oils can deteriorate in the storage as a result of exposure to low or high temperatures. The literature reports that the major problem associated with the storage outdoors during cold weather is with dispensing of products not intended for low temperature service. The literature reports that at moderate temperatures, the long-term storage has little effect on most premium lubricating oils, hydraulic fluids, process oils, and waxes (Pirro and Wessol, 2001). Below-freezing temperatures will not affect the quality of most fuels, solvents, naphthas, engine oils, and greases. The prolonged storage at higher temperatures might cause the darkening of oils due to oxidation (Pirro and Wessol, 2001). Different containers used for the packing and the storing of the turbine oils were reported to affect their demulsibility properties. The clear glass and the white plastic containers were found to lead to a fast aging caused by the photooxidation (De Araujo Monte, 1998). The literature reports that any new engine oil formulation should be tested for the additive solubility under both cold and hot storage conditions (Rudnick and Shubkin, 1999).
