Find out how to ensure your engine oil…
Engine oil additive intervals
by Alex
Expert answer:
Quick answer
Oil additives typically align with your regular oil change intervals—either added right after a change or just before. Some formulas last the full interval, while others (like flushes) are short-term.
Detailed answer
Some additives—like friction modifiers or seal conditioners—are designed to stay in the crankcase for the entire oil cycle, usually until your next scheduled change. Others, including engine flushes or strong cleaners, only work for a short run before draining. Reading the manufacturer’s guidelines is crucial. Typically, you add long-term additives right after filling with fresh oil, ensuring an even blend. If you’re trying to dissolve deposits before the change, you might pour in a flush additive, idle the engine for a recommended time, and then immediately drain the oil. Knowing which approach your product calls for keeps your lubrication strategy consistent and effective.