The dealer did ask for some KY Jelly
They are doing the service but i'm sending the car to Darren Wood for it's stats and breather.
An e90 member Shane posted a great guide on the stats but i dont want to risk anything.
Once the stats are done all the things that normally need replacing at some point on the 335d will have been done. I'm selling it early next year so some might haven't had bothered but i couldn't sell it knowing a typical operating temp of 75-78 will eventually lead to DPF probs, costing 1.4k for the next owner.