Your pump oil's lifespan depends on various factors, primarily temperature. Mineral oils can endure up to 80°C (176°F), with a 10°C increase halving their service life. Synthetic oil performs well between 100-160°C (212-320°F), while PFPE oils remain stable up to 250°C (482°F) due to their inert nature. Extremely cold conditions can lead to vapor condensation, potentially causing lubrication loss and pump corrosion.