Corections to earlier posting- Mods, please delete Previous post.
Time on oil- 23 months, 9k
Time on Unit 40k
Oil Type- Cam 2 Blue Blood Euro, LL-01 5w-40
7 quart sump.
This latest sample from your Z4 looks similar to previous reports, so this is another good one to
add to the books. Copper is the only metal that's close to getting a mark, but it's remarkably steady, so it's
hard to fault it too much. We typically start marking wear metals when they're just over twice the universal
average value, so copper is worth watching, but we aren't convinced it shows trouble. Instead, it looks like
some extra copper is the norm for your Z4. The TBN was strong at 4.2 and the slightly low viscosity isn't a
problem. Up to 12K miles next is fine.
cSt Viscosity @ 100°C-11.04
SUS Viscosity @ 210°F-62.9
Flashpoint in °F-400
Comparing to my last Analysis with Amsoil for a 10k run, all numbers are very similar.
IN: Pennzoil Platinum 5w-40 Euro, Baldwin 7438 Filter.