Get a TBN with your standard engine oil sample! The standard sample with TBN includes:

• Spectral exam
• Viscosity
• Insolubles (total solids)
• Flashpoint (checks for fuel and other contaminants)
• A Total Base Number, which measures the amount of active additive remaining in the oil. Good for exploring extended oil changes.

You do not need your customer number or an account to pay for a sample. We will match up your payment with your sample. Let us know if you need a kit.