I guess i found my answer. Having spent this much already is not the way to go. I have had one set, already replaced under warranty from B*B and this next set only lasted 4 months. I performed the contamination tests as instructed and all modern oils have detergent in them. I tested the new AHC fluid and got the same results! Not to say aftermarket is bad, just that this is now a "pandemic" issue we are all facing. I agree to flush the system thoroughly. Not sure what anyone's track record is with this company, especially installed on a vehicle and still performing. Flush and go OEM! I have no choice but to say going with this aftermarket company is not advisable.