Gulf Western SYN-X Plus 5W-30 is a high performance, high quality, fully synthetic oil formulated for use in vehicles that require the use of API SN/CF ACEA A3/B4 specification engine oil. SYN-X Plus provides exceptional deposit and sludge control to keep your engines internals clean and minimise wear while maintaining engine oil performance for increased oil change intervals. The full synthetic base oils offer great viscosity stability during operation in extreme temperatures and minimises harmful wear caused during start-up. Gulf Western SYN-X Plus Engine Oil is suitable for use in passenger vehicles and light commercials using petrol, LPG and diesel engines (Not suitable for vehicles fitted with Diesel Particulate Filter) where API SN/CF, ACEA A3/B4 or earlier specification engine oils are recommended. 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.