PAGs are learning to love their mineral oil counterparts
The lubricating benefits of polyalkylene glycols have been known for many years to developers of industrial lubricants, such as those for gas compressors and gear boxes. However, the main blocker to their wider adoption over most of their 70 years of existence has been compatibility with mineral oils.
The PAGs that show excellent performance in worm gears, for example, do not mix with mineral oils, often producing “soft cheese” texture. Therefore, customers resist their introduction, fearing lost production and expensive clean-up if a gearbox is accidentally topped up with the wrong oil.