Hey everyone. I'm looking for some insight on German Syntec being run in the Northstar and LS1 engines. Has anyone tried the oil in these engines, any feedback? My parent's car is a 96 STS with a Northstar. I've been using Mobil 1 SS in it this year with decent success, mixed 5:2 5w30:15w50 but looking for a more universal oil for it rather than mixing. I've also considered Delvac 1 5w40, despite the expense. I've been using German Syntec in my 98 GTP all summer and have been happy with the results.