Greetings folks, on my last oil change I went to Amsoil synthetic and filters (dealer installed), and my rig is nearing 70k. I have recently received free oil changes for 2 years from the dealer (settlement for some damage done to my truck ) but the oil changes do not include synthetic oil, just the standard dino oil/filters.

Just looking for opinions, is this a wise move to go back to dino oil after running for about 6k miles on Amsoil synthetic ?

 

I believe Amsoil claims compatibility with all other oils so I don't believe there would be any harm.

 

I use Royal Purple and it claims to be compatible to.