How do TBN additives / overbased detergents work?

Think of your car engine as a busy kitchen where oil is the chef who keeps everything running smoothly.

Inside that kitchen, tiny bits of dust and burnt food (soot) stick to the walls and pots. These dirty bits can make the machine jam up. TBN additives, or overbased detergents, act like super-strong, reusable sponges. They don’t just sit there; they actively grab the gunk and neutralize the acid that forms when fuel burns. It’s like having a team of tiny, hardworking janitors who never sleep.

Regular cleaners get full quickly. But overbased means these cleaners have extra “pockets” or capacity. Imagine a backpack that can hold three times more stuff than a regular one. This extra capacity helps the oil last longer and keeps the engine parts shiny and protected, just like how a good vacuum cleaner holds more dust than a small broom.

It’s not about making things disappear; it’s about holding onto the mess so the machine stays happy.

These additives work hard so your car doesn’t cough or overheat.