Image 1 of 1 STP Engine Flush (Petrol & Diesel) - 450ml £6.95 Quantity: Add To Cart Added! Suitable for petrol and diesel engines.Add directly to used motor oil before each oil change.Removes harmful sludge and deposits.Contains an anti-wear additive to help protect engine surfaces. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like BAR'S Radiator Stop Leak Compatible with all Anti-Freeze - 200ml from £7.95 SAS Engine Flush - 300ml from £6.80 SILVERHOOK Octane Booster (High Performance) - 325ml from £5.65 SILVERHOOK Automatic Transmission & Power Steering Stop Leak - 350ml from £4.75 SILVERHOOK 'DPF' Diesel Particular Filter Cleaner - 325ml from £7.50