Is Engine Restoration Protection Fluid Useful?

[VanRicardo]

Engine restoration protection fluid has certain benefits. It can effectively reduce wear and corrosion of engine components, inhibit the formation of deposits such as gum and sludge, and form an extremely thin yet highly pressure-resistant and wear-resistant protective layer on metal surfaces. This prevents oil oxidation, thickening, and acidification, thereby protecting engine parts and extending engine life. It also effectively reduces noise caused by friction or degraded oil lubrication performance. Engine restoration protection fluid, also known as engine protectant, is used when a gasoline engine is in the break-in period or when hydraulic lifters produce abnormal noise. Simply mix it with engine oil according to the specified ratio and add it to the engine crankcase.

[Walker]

I used this engine restoration fluid once before, and it felt somewhat useful but don't expect it to be a miracle cure. After using it on my old car with nearly 200,000 kilometers, the engine noise did decrease a bit, and the throttle felt lighter. However, the veteran mechanic said this stuff only provides temporary improvement and doesn't actually repair worn-out parts—it's like painkillers that don't cure the root cause. From my experience, it's suitable for minor oil burning cases or when you want to extend engine life. If you've got serious cylinder scoring or oil leaks, you'll still need to open up the engine for repairs. When using it, make sure to choose reputable brands as cheap products might clog oil passages. Of course, the most important thing is regular oil changes—that's better than any protection fluid.

[ChaseMarie]

From a maintenance perspective, these products are just temporary fixes. The anti-wear agents they contain can fill in minor scratches, helping piston rings re-seal against cylinder walls and temporarily improving compression ratio. But any mechanic knows that chemically-induced solutions can't address long-term metal wear gaps. If your bearing shells are scored or crankshaft worn, no amount of protective fluid will help. Some additives may even react with engine oil, reducing cooling efficiency. For genuine engine issues, a proper teardown inspection is better - though older cars might use them for psychological comfort. Remember to apply them during oil change cycles, adding the treatment when replacing engine oil.

[Grover]

I've studied the formula. The principle involves molybdenum disulfide or PTFE microparticles that can fill metal micropores under high temperatures. Tests show it can stabilize oil pressure by 15% within 5,000 km and reduce cold-start knocking. However, it's basically ineffective for cylinder wear exceeding 0.1mm, and inferior products may form gum deposits that clog oil pump screens. My recommendation: Completely unnecessary for vehicles under 100,000 km. For older cars over 200,000 km, use with full synthetic oil - adding one bottle before highway driving can protect cylinders. Remember: Don't treat it as a repair substitute. When major overhaul is needed, don't hesitate.