We have been using the GM OLM exclusively in dad's silverado with the 5.3 ecotec3. It seems to be working pretty well. I know the GM OLM is supposed to be fairly intelligent but it so far tracks closely with 7500mi intervals. The one occasion we used M1 EP in the truck it was not convenient to change at 7500 so we reset and went again to about 50%. Everything still clean and nice looking approaching 90k.
We did do a UOA on a full OLM run of Magnatec. It didn't turn up anything out of the ordinary and the TBN was 2.2.
We did do a UOA on a full OLM run of Magnatec. It didn't turn up anything out of the ordinary and the TBN was 2.2.