About 1600 miles into my cleaning phase. My history is a 2009 5.3 AFM that began consuming oil around 25-30k miles. Currently 57k. Consumption got bad enough for the dealer to finally do the TSB fix for a revised PCV valve/cover and AFM shield in the oil pan. They also did a piston soak but said this fix is usually 50/50. Next fix would be engine teardown for piston & ring replacement.
Did a double dose of A-RX in Mobil 5000 oil. Took several 300 mile trips over the last 1600 miles. Initially, it continued to drink oil. Down 1/2 quart over the first 500 miles. However, it has begun to stabilize since then and is now only 3/4 quart down over the next 1100 miles. I'm not sure how much of this is the TSB and how much is the A-RX, but the consumption is definitely stabilizing. Also, for the first time in a long time, I am able to spin the tires from a standing start and trigger the traction control. I have no doubt A-RX is cleaning and has freed up some coked oil/carbon from the ring packs.
Just thought I'd share. I know it A-RX has fallen out of graces around here. Regardless, the journey ends here. I traded it for a Honda Pilot
Did a double dose of A-RX in Mobil 5000 oil. Took several 300 mile trips over the last 1600 miles. Initially, it continued to drink oil. Down 1/2 quart over the first 500 miles. However, it has begun to stabilize since then and is now only 3/4 quart down over the next 1100 miles. I'm not sure how much of this is the TSB and how much is the A-RX, but the consumption is definitely stabilizing. Also, for the first time in a long time, I am able to spin the tires from a standing start and trigger the traction control. I have no doubt A-RX is cleaning and has freed up some coked oil/carbon from the ring packs.
Just thought I'd share. I know it A-RX has fallen out of graces around here. Regardless, the journey ends here. I traded it for a Honda Pilot