Improper engine break in.

VR1 10W30 is a bit light on ZDDP if you have a flat tappet cam. 1100 ppm. Might be OK, might not. So use some additive with that.

You could consider 10W30 VR1, with a 1/4 bottle of Rislone Oil treatment to keep the ZDDP up, for fall through spring. And then go to 20W50 for the summer. It has 1400 ppm ZDDP.

https://sharena21.springcm.com/Publ...2d889bd3/a61538b4-0cbd-e711-9c12-ac162d889bd1