This powerful diesel system cleaner from STP is a must-have for any vehicle owner looking to improve their engine's performance. With a concentrated formula that includes anti-wear, corrosion inhibitor and friction modifier properties, this cleaner is designed to keep your diesel engine running smoothly and efficiently.

The STP Ultra 5 in 1 Diesel System Cleaner comes in a pack of two, each containing 400 ml of concentrated cleaning power. Perfect for reducing emissions, improving fuel economy and extending the life of your engine, this diesel system cleaner is a great investment for any vehicle owner.