I am hesitant to start this thread. There are so many oil threads and opinions are abundant. And, passions can run hot. But.... here goes.
I completed my annual oil change of the Boxster New Years day. This is the second oil change after installing a spin on oil filter & a magnetic plug and the third oil change since switching to Joe Gibbs DT40 5W/40. I had previously used Mobil One 0W/40. I know little about oil but I noted that since switching to Joe Gibbs the Blackstone report documents that Molybdenum, Boron are almost nonexistent and the calcium is lower by about a third. Magnesium is up while zine is about the same as Mobil One 0W/40 or a tad less. Of the elements listed on the Blackstone report, I can't see any increase in any area since switching to Joe Gibbs. Perhaps there are other additives that aren't included.
