Wow, 10K on your factory fill! That's some dirty oil, my friend. I probably won't go more than 3,000 miles on my factory fill. There's a lot of junk in the system.I did 10k miles on factory fill. Then had dealer do their pennzoil fill. Then I did Amsoil euro at 18k. Then yesterday morning I’m on my second Amsoil euro change at 28k miles. And have enough Amsoil euro for another change in 2 months at 38k. Might see if they’ll exchange it.
I figured it’s fine it meets fca specs. But they probably feel weird marketing a euro bmw Porsche oil for a diesel truck and changed their recommendation
You're logging the miles! You're one of the pioneers leading the way with the Gen. III engine. Have you considered taking UOA samples?
Amsoil recommends the very best oil for your application. They only make recommendations based on the specs that FCA/VM Motori gives them. When a new engine is released, it's very common for specs to change in the first 12 months after the engine is released. Amsoil might change a formula and/or the manufacturer might change their specs as more information is known about the engine. Emissions alone can cause the OEM to change specs.