It would be difficult to tell simply on your oil pressure gauge what’s going on. However, it’s doubtful Mobil 1 has premature shearing issues.
Without raising red flags:
1. Depending on your oil change intervals and your dealer re-order intervals, along with their supplier’s re-order intervals - you could be seeing the beginning of the Dexos 1 Gen 3 additives. Or, potentially on your second oil change with this, as some of it came live as early as last November.
2. Your dealer could be using something different than Mobil 1. There have been continued additive shortages in the pcmo market for the last 16-18 months. It is regionally - and marketer - dependent. The latest is Afton going down, again.
Your dealer may, or may not be aware of any changes to the formulation they’re purchasing. However, I would assume it’s PQIA in spec and/or a Dexos licensed product.
More… not good things.
1. Wrong oil was used. Only way to tell is a UoA.
2. Oil wasn’t actually changed.
3. Other issues, including mechanical, dealer, etc.
But if they’re using factory sealed - or even distributor (hopefully MOM approved) supplies oil, I would safely guess that Mobil 1 doesn’t have a premature shearing issue.