Why are disassembled engine parts usually degreased with mineral spirits solvent?

When it comes to degreasing disassembled engine parts, using mineral spirits solvent is preferred primarily due to its effectiveness in avoiding contamination that can arise from water-based degreasers. Water-mixed degreasers can leave behind residues that lead to oil contamination, which is detrimental to engine performance and longevity.

Additionally, it's important to note that using a water-based degreaser often has the potential to cause corrosion on engine parts. Metal components, especially those made of aluminum or steel, can be susceptible to rust or oxidation when they come into contact with water, which is why a solvent-based option like mineral spirits is favored.

Therefore, the advantages of using mineral spirits encompass preventing both contamination and corrosion, solidifying why they are the go-to choice for cleaning disassembled engine parts. This highlights the comprehensive effectiveness of solvent degreasers in maintaining engine part integrity.