Originally Posted By: Trav
Yes it cleans quickly.Without seeing it i don't know if 1 dose will do it.
If it doesn't there is no need to change the oil at 1K just add another 16oz for another 1K then change to your regular oil.
I had around 1K miles on a new OCI of Castrol Edge before adding the Kreen.
As mentioned before, I ran 3 consecutive tanks with BG 44K, on the new oil, to clean up the top end. I am now thinking about changing the oil after the first round of Kreen, mainly because I ran the 3 tanks of BG 44K on this OCI(will have 2K miles on oil after the first round of Kreen). Not sure if the BG 44K effected the motor oil or not. Who knows how much 44K is in the oil with the Kreen. Oil now is probably a 0W10. LOL...