Engine additives play a vital role in reducing wear within internal combustion engines

Continuous mechanical contact between pistons, bearings, and valves gradually erodes metal surfaces unless properly lubricated

They work by chemically bonding to surfaces, forming a shield that reduces direct metal-to-metal contact under extreme conditions

Other effective formulations include molybdenum and phosphorus-based chemistries

Under extreme load and heat, ZDDP decomposes to create a sacrificial phosphate-glass layer that coats metal

The protective coating ensures sliding surfaces glide smoothly without grinding

Even with modern low ash formulations, these additives remain essential for protecting older engines and high performance applications

Some formulations use organic molecules like fatty acids or polymeric coatings

These substances reduce the coefficient of friction between moving parts, which not only decreases wear but also improves fuel efficiency

They transform rough contact zones into low-friction interfaces

They prevent the formation of harmful deposits that accelerate abrasion

This keeps critical clearances free from abrasive debris

When these contaminants are suspended in the oil and filtered out, they are less likely to grind against surfaces and cause accelerated wear

It is important to note that not all additives are created equal

Independent lab tests often reveal negligible or even detrimental effects

API SN, SP, or اتوسرویس داوود Ck-4 ratings are reliable indicators of quality

They may also interfere with oil sensor readings or disrupt modern engine management systems

Fresh oil with balanced chemistry is the foundation of longevity

Skipping service intervals negates even the best additive benefits

Properly treated engines often exceed 250,000 miles with minimal wear

For vehicle owners seeking long term reliability, understanding and using the right additives is a smart investment