Learn how to keep oil additive use safe…
Are oil additives good
by Alex
Expert answer:
Quick answer
Oil additives can be “good” if they address real engine problems—like reducing minor leaks, friction, or sludge. If your engine runs fine or has severe damage, they may provide minimal benefit.
Detailed answer
Many additive formulas focus on reconditioning seals, dispersing sludge, or improving lubrication under high stress. For an older or moderately worn engine, that extra assistance can noticeably cut oil consumption or quiet a noisy valvetrain. Conversely, a healthy engine might not need additional help, so you’d be spending money with little to show for it. With major mechanical failures—like a rod knock—no additive will truly fix the problem. Thus, whether they’re “good” depends on usage. Applied thoughtfully to the right situation, oil additives certainly can help.