1) I have heard it said that some of us use a zinc (ZPPD) additive as recent EPA changes have lowered the zinc content limit of off the shelf oils. Which do you use, and which would you avoid?
2) So called 'German Castrol'. Today I was at the autoparts store picking up a few things and saw a 5.1qt jug of the Eropean Formula Castrol for a good price. Most stores in this area only carry the 1qt bottles, if they even stock it, which at $9-$11 a pop makes changes expensive. I picked up the jug and checked the label to make sure I was looking at German Castrol, but the back did not say 'Made in Germany' as expected.....it said 'Made in Belgium'. Has anyone heard if there was a reformulation or was this just a change in manufacturing facilities?