My (L322) 4.4 TDV8 needs a top op of oil. Simple you would think, but my handbook says I should use oil meeting specification "WSS-M2C921-B" or "Castrol SLX Professional Powerflow C1 5W-30". I couldn't find it at my Shell garage or my local motor store. Is the that simply a fully sinthetic 5W-30? Do I need to go to my independent Land Rover garage?

I bought the oil that you can use in an emergency, i.e. Not the low sulphur stuff.... from Halfrauds. Not really needed any between services though.

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