My apologies in advance if these are questions that have been asked before: (If so, please just point me to the relevant threads)
I am on the edge of going to my first rinse phase (about 50 miles short of 1500 at the moment).
The cleaning was done with Supertech 10W-30.
I know from the site instructions that I need to get dino for the rinse, but I was wondering if I would get any additional benefit from changing to 10w-40 during this phase. And, should I stick with the cheap stuff, or look at Castrol or Mobil for better cleaning potential?