Below is the results from my 944 race car using Elf Comp 10w50 with a dose of Redline Break-In additive. Oil was in use for 8 very tough hours including one stint with a 3 hour enduro. car is run at rev limit quite often in each sprint race. K&N air and Purolator oil filter.
Blackstone results
Al 4
Chro 3
Fe 8
Cu 3
Pb 22
Tin 3
Moly 96
Ni 0
Mg 1
Si 0
Ti 0
K 5
Bo 7
Sil 10
Na 70
Ca 1886
Mag 787
Phos 1643
Zn 2055
Bar 0
SUS 70.9
CSt 13.18
Flash 385
Fuel .5
AntiFreeze ?
Water 0
Insol .3
Blackstone results
Al 4
Chro 3
Fe 8
Cu 3
Pb 22
Tin 3
Moly 96
Ni 0
Mg 1
Si 0
Ti 0
K 5
Bo 7
Sil 10
Na 70
Ca 1886
Mag 787
Phos 1643
Zn 2055
Bar 0
SUS 70.9
CSt 13.18
Flash 385
Fuel .5
AntiFreeze ?
Water 0
Insol .3