If you don’t know an oils base number your sump could be a sulphuric acid bath!

So what’s an oils base number got to do with Sulphuric acid?

You’ve probably heard the commentary in the media about the Sulphur content in diesel fuels – did you know that high Sulphur content is a major factor in reducing oil life in diesel vehicles? And the lower the oils base number, the greater the risk of acid build up.

How do we define an oils base number.

The oils base number (BN) is a property