100% Synthetic Diesel Oil

Can I use AMSOIL 100% Synthetic Diesel Oil in my diesel engine that requires API CK-4 (or prior) diesel oil?

Can I use AMSOIL 100% Synthetic Diesel Oil in my gasoline engine?

Can I use AMSOIL 100% Synthetic Diesel Oil in my European engine?

Can I use AMSOIL Signature Series Max-Duty or Heavy-Duty Synthetic Diesel Oil in my smaller American diesel vehicle?

I currently use 5W-30 LS Synthetic European Motor Oil (AEL) or Signature Series 5W-30 Max-Duty Synthetic Diesel Oil (DHD) in my smaller diesel vehicle based on previous AMSOIL recommendations. AMSOIL now recommends 5W-30 100% Synthetic Diesel Oil (DP530). Which product should I use?

You may continue using either of those products if preferred, but moving forward, our recommendation is 5W-30 100% Synthetic Diesel Oil (DP530). It's purpose-built to meet specific diesel specifications. While the aforementioned products cover some of those specifications and offer good protection in those engines, AMSOIL 5W-30 100% Synthetic Diesel Oil delivers even superior protection.