Originally Posted By: crazycrak
after using Auto RX and after the rinse. will GTX 5w30 and a AC Delco filter keep the engine clean even with 3000-5000mi OCI
Yes.
If your OCI is 3,000 miles with GTX: no maintenance dose.
If your OCI is 5,000 miles with GTX: then run 3 ounces of Auto-Rx as a maintenance dose.