Changed mine last Friday from Delvac 1300 after finishing my Auto-RX rinse phase. Made a mix of Amsoil S3000 5W-30, 2 quarts, Amsoil 5W-40, 2 quarts, and half a quart of Castrol Syntec 0W-30, aka German Castrol, SLX, or the green elixer of lubrication :lol:. Those who frequent bobistheoilguy know what I'm talking about. Combined it becomes a thin 40 weight when hot (awesome for mileage) with a pour point of around
-50C.