Oil system cleaning products should not use solvents because:

Solvents smell bad

Solvents have no impact on dirt and debris

Solvents are completely removed during the service

Solvents can damage certain plastics and rubbers found in the engine

1 answer

Solvents can damage certain plastics and rubbers found in the engine. This is the primary reason why oil system cleaning products should avoid using solvents. Many engines contain components made from materials that can degrade or be adversely affected by harsh chemical solvents, leading to potential damage or failure.