10w40 fully synthetic oil.

[t5bobbo]

Just to add I've gone for Mobil super 2000 10w40 semi synthetic. Should hopefully do the job. Thanks for all your help

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[LeeT5]

Just to add I've gone for Mobil super 2000 10w40 semi synthetic. Should hopefully do the job. Thanks for all your help

Oh. It is my understanding that on a 2003 model T5, you should be using Fully synthetic, not part. As originally specified/recommended for your engine would have been 5w30 Fully synthetic. You can correct me wrong if you like, but that's what I was informed was the case.