Can you use naphtha to flush engine?

Yes, naphtha can be used to flush an engine, as it is a solvent that can help remove sludge and deposits. However, it is important to exercise caution, as naphtha is highly flammable and can damage certain engine components if not used properly. It's advisable to consult the vehicle's manufacturer recommendations or a professional mechanic before using naphtha for this purpose. Additionally, consider using products specifically designed for engine flushing to ensure safety and effectiveness.