I also can't seem to find a service schedule to see if the plugs actually will date back to 2014. Even if they do, I can't see how they'd have got corroded.
Exactly - do as much as you can yourself.
@Sparky started
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I also can't seem to find a service schedule to see if the plugs actually will date back to 2014. Even if they do, I can't see how they'd have got corroded.