Like I said Could just be coincidence, but these guys are always top performers(in the nascar short track hall of fame). Before this year I can't remember when they had motor issues....
These motors are high dollar, max 360ci..9:1 all roller...living in the 8300 to 8700 rpm range....A couple years ago we switched oil(looking for HP:and no not Gibbs oil) and lost a motor first time out....Bearings in the rockers were all tore up, changed back to the other oil haven't had a problem since....
All I can say is what works for some doesn't work for others, but no matter what you do....DON'T GO CHEAP ON OIL....