Has anyone tried Royal Purple Syn, Oil.. I see several have other syn, oils..??? Doug

 

RP is all I use in my truck 5W20. I also use RP Ice for the radiator and I use it for the lube in my differential. Its one of the few true synthetic oils left. I like the molly component which helps coat the inside of your engine. Some do some don't but I think RP or Amsoil you cant go wrong but thats just my opinion and you know what they say about opinions. Do a search on here under Royal Purple and you will have lots to read bro