Hi Sally,
Sold my WH early this year. It had over 200K on it and the oil was so clean it used to amaze my mechanic.
He put it down to the GDE tune with EGR delete, the Provent 200 & the 2 stroke oil added to my fuel.
Now have a 2014 WK2. So far, I have fitted a Provent 200 (see pics below) and are having a ECU tune with EGR delete done next week.
Haven't added the 2 stroke oil to the fuel as yet as I am waiting to see how the Provent.......and the EGR delete goes.
Below is a pic of the Provent mounted beside the air cleaner box......
Below is a picture showing the bottom of the clear tube attached to the underneath of the Provent. I have a ball valve tap below the Provent that you can reach with your hand to let the oil out into a container.......
Cheers, Craig