Penrite Outback Hardened 4x4 10W-40 Semi Synthetic Diesel Oil is one tough customer, formulated with a selection of premium additives that are designed to help your engine stand up to whatever the roads or the beaten track throws your way. Produced for vehicles where 10W-30/10W-40 car engine oils are originally recommended this product is designed to reduce and prevent excessive oil consumption, as well as assisting with maintaining good oil pressure. This super versatile engine oil is ready for a ultra-wide range of applications for wet-clutch motorcycles to earthmoving equipment, and is suitable wherever 10W-30 or 10W-40 API CI-4/SL, ACEA A3/B4 or earlier specifications are required making this a great option for fleet owners. The clever formulation supports healthy running by battling the build-up of sludge and soot deposits, and protecting your engine over the long term. Not suitable for use in diesel engines fitted with DPF (Diesel Particulate Filter). Protect your diesel engine against harsh Australian conditions by using this Proudly Australian made and owned product. To find the oil type and viscosity suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.