XTA POLARPLUS 5W-40 is a premium-quality. special oil, developed for every-day application. It is suitable for gasoline, diesel engines, naturally aspirated, turbocharged and with direct fuel injection. Properties. XTA is a new generation of oils, comprising a legendary Polar Plus friction modifier which ensures guaranteed engine protection from wear, especially during cold start and at high temperatures and loads. Bardahl has constantly high quality and ensures exceptional protection of friction pairs. It can be used in most gasoline and diesel engines. Approvals and specifications: ACEA A3/B4; API SN/CF; MB 229.5; VW 502.00/505.00; BMWLL-1; OPEL LL-B-025; PORSCHE A40; Renault RN0700/RN0710