MANNOL Motor Doctor Ester Life Extender 12 x 450 ml pack. Ester-based engine oil additive for all four-stroke petrol and diesel engines. Viscosity stabiliser, sealant, anti-wear, anti-corrosion, anti-oxidant. Extends oil life, improves cold starts, reduces consumption. Leak-detection dye. Use 100 ml per 1 litre of oil.
eBay