A fully synthetic, multigrade engine oil designed for use in the new generation of compression ignition (Diesel) Aviation Piston Engines. The formulation has been selected to be suitable in piston engines fuelled by Jet A or Jet A-1 and is designed for use in the latest highly rated turbocharged diesel engines under all operating conditions. AeroShell Oil Diesel Ultra MUST NOT be used in spark ignition, or Avgas powered aircraft engines.
 
MB-Approval 229.5, AeroShell Oil Diesel Ultra is approved for use in the following engines: Thielert/Centurion Engines 1.7 & 2.0 Centurion, ACEA A3/B4, API SL/CF, SAE 5W-30