Quick answer
Follow the product label’s dosage and application guidelines. Most additives are poured directly into the crankcase, but some require a warm engine or a specific mileage to take effect.
Detailed answer
Each oil additive has specific instructions depending on its purpose. Some require warm oil for better blending, while flush additives need a short runtime before an oil change. Measuring the correct quantity is crucial—overuse can cause foaming or thickening. Always verify compatibility with your oil type and follow the recommended change intervals for best results.
