Ford Duratec Oil? (XKR hunting)

Tinty · Sep 4, 2025

So, checking daily for cars nearby for what seems like a millenium (most cars are down south..hint where Ill be then...and or black which i dont want). Would rather purchase from some sort of dealer but now considering private.

To cut a long story short seen one thats had a service at a non jag/specialist garage noting it put in '5W-30 Fully Synthetic X Tech Ford Duratec oil (ACEA A5/B5).

I know the 4.2s use 5W-30 but just hadnt read this being used. I know its from the ford era as such but ford duratec makes me wonder if they have used incorrect oil? (Also does any 5w-30 work whether its semi or fully synthetic?).

Thanks for any help

RichardS · Sep 5, 2025

The Duratec oil is fine. Virtually any branded 5W-30 fully synthetic oil would be fine other than the ones designed for use with diesel DPFs. You could also use semi-synthetic but, apart from the potential initial cost saving, everything else would be a downside so it's best avoided.

Richard

ericmcn · Sep 5, 2025

Wouldn't worry too much about that, the standard that was recommended for the 4.2 was superceded into these new ones which are backwards compatible with the old one. Ford is the spec apparently, the crucial thing is it's had 5W30 oil changes in the first place, ideally before 10k miles each time

Neilr · Sep 5, 2025

Product | COMMA XTECH 5W-30 Fully Synthetic meets the original Ford specs for these engines so is basically acceptable. Later oils might be better still.

Tinty · Sep 5, 2025

Thanks for the replies folks, much appreciated. Tempted to have a look at this private one. Just shy of £11k for 2008 with less than 60k miles sounds not bad at all.

MrKis · Sep 6, 2025

Look at the subframes for rust and inspect the body carefully.

Ford Duratec Oil? (XKR hunting)

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