Is it ok to switch to synthetic oil? I can't find any info on this at all. I have a 91 5.0 I just freshened up for my 86 vert. Reused rods, pistons, crank, but I did clean them up.
The big worry with synthetics is with ring seal with new rings and clean bore surfaces. If you freshened things up that much, I might run dino oil for a little bit (most of the ring seal should occur within minutes of operation).
I would be doing a break-in period of sorts no matter how much or little was done inside the motor. And dino oil is what I would choose for that short OCI.
MHO.
Good luck.
The big worry with synthetics is with ring seal with new rings and clean bore surfaces. If you freshened things up that much, I might run dino oil for a little bit (most of the ring seal should occur within minutes of operation).
um rings seating within minutes???? i dont think so......try for a proper break in of rings 8-10 track passes or a good 500 miles.....I would run 10w30 dino oil for the first 1-2k miles then i would change filter/oil to synthetic at that point if you prefer.