break-in oil?

The 287 takes the 995 dual spring assemblies... So in order to have the cam break in go well, you should only have the outer springs installed on the heads, and you will want to run a good performance oil for the break in. I use the VR1 offroad. It has s ton of zink in it. I would run it for the break in, then for the first oil change after the break in after you install the inner springs. Then dump it after about 500 miles and run whatever you want for a 15/40 or 20/50.