Bill,
At the 5000 mile OCi Dino will work quite well, but 5000 mile OCIs are rapidly becoming obsolete. Even Ford now is up to 7500 mile OCI. with a synt. blend. As most recognize here at BITOG full synt. oil just gives a higher level of protection that many desire. Many auto manufactures world wide, as you know, now require Synt. oil for longer OCI and it's my opinion most auto manufactures will require synt. for their cars in less than 10 years. That's the trend. As I see it.