Gurney, the M1 in question is only the 5W-30 and only for a period covering two years according to Ashland.
The average consumer will never notice the extra wear, as the test is only one of many that the oil must pass. Those doing used oil analysis have seen higher than might be expected iron values that could be from cam wear(which is what the Sequence IVA test measures). I also notice that the very latest UOAs for M1 5W-30 show "normal" iron numbers. Hmmmmm...
Ed
The average consumer will never notice the extra wear, as the test is only one of many that the oil must pass. Those doing used oil analysis have seen higher than might be expected iron values that could be from cam wear(which is what the Sequence IVA test measures). I also notice that the very latest UOAs for M1 5W-30 show "normal" iron numbers. Hmmmmm...
Ed