Looks like this oil is tailor made for the 8.

Deposit Shield

 

Another oil with a pretty name.

I still use this, if they run out at my local store, Im gonna use this this.

 

Brand new - jury is out.

The old formula was a well-respected dino oil around BITOG - lot of moly.

 

I have used Havoline for years. Got 268k miles out of my old 91 Explorer using it. My 68k mile 2004 RX8 has had Havoline it's entire young life. Just put the new "Deposit Shield" in last week. Don't know what the difference is yet.

 

I doubt that you can tell. Its just like any other oil.

 

It may be just wishfull thinking, but after regaining lost zoom zoom with a tank full of Techron and cleaning the crud off my spark plugs I am more aware than ever about how carbon can build up in a rotary.