I would suggest that you wait until your next oil change in the Kia to start your Auto-Rx application. It is never a good idea to put two different chemistries into a motor oil at the same time. More than likely the volatile sea foam product will evaporate out of the oil sometime during the coarse of this oil change, it is not worth the risk. So again wait until the next oil change to start the Auto-Rx application.
In the future when running a maintenance dose, a volatile product like SeaFoam would serve you better on the back half of an oil change, whereas a product like Auto-Rx will remain on the job for an entire oil change interval.
Best Regards,
Rich Eklund
-- Edited by Frank on Saturday 25th of May 2019 12:41:55 PM