All,
I go to Toyota to get my oil changes and I noticed an advertisement for this synthetic called Royal Purple. I said to myself..."what the hell." I felt the difference right off. The acceleration was smoother, the idle lessened and a little more juice uphill. The true test came when my wife took my car one night and she noticed the difference also and I had not even told her about the oil change. Royal Purple is a bit pricier but I think that it is worth it if you have an XB. It's not magic but damn near close - I don't think you will be disappointed.

http://royalpurple.com/techa/whyrpa.html

 

I have been using Royal Purple since my first oil change. I won't use anything else. A bit more expensive then conventional oil but I think the extra protection in worth it.

Ed