For extra engine protection
One bottle of STP® Oil Treatment for Diesel Engines will treat 6 litres of diesel oil (5% treat rate). The entire bottle should be added to oil when the engine is warm (but not overfilled).
IS IT SAFE TO USE IN MY VEHICLE
STP® Oil Treatment Diesel is not recommended for use in petrol engines.
Not suitable for use in Low SAP oils. Do not overfill.