GOLD IS GOOD!
This is my second UOA done on this engine - prior analysis was done on Lubro Moly Voll-Synthese (5w-50) nearly 50k miles ago. That analysis along with assorted comments can be found in this thread:
http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=3;t=001353#000000
I've used Lubro Moly until my last couple of oil changes - this test is from my second change using Gold GC, the first fill being changed after about 5,000 miles. I'm pleased, and will probably continue to use this oil as long as I can find it.
I've collected what I can for GC VOA results, but have found conflicting sodum results 14 and 4.
This is my second UOA done on this engine - prior analysis was done on Lubro Moly Voll-Synthese (5w-50) nearly 50k miles ago. That analysis along with assorted comments can be found in this thread:
http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=3;t=001353#000000
I've used Lubro Moly until my last couple of oil changes - this test is from my second change using Gold GC, the first fill being changed after about 5,000 miles. I'm pleased, and will probably continue to use this oil as long as I can find it.
I've collected what I can for GC VOA results, but have found conflicting sodum results 14 and 4.
More Comments to come - will add to this post when I receive Terry's interpretation of these results.code:
1997 Passat VR6
Sump Capacity: 5.8 Quarts
Type of oil Lubro Moly Castrol Univ-Avg Castrol
Voll-Synthese Syntec Syntec
GC-GOLD GC-GOLD
Weight 5w-40 0w-30 0W-30
Date 03/07/04 09/10/05
Miles on engine 234074 281289
Miles on oil 7414 5238 0 - VOA
Makeup Oil 1.5qts 2.0qts
Aluminum 4 2 4
Chromium 1 1 1
Iron 15 10 17 3
Copper 2 4 5
Lead 12 9 4
Tin 1 1 1
Molybdenum 4 11 40
Nickel 1 0 1
Manganese 1 0 2
Sliver 0 0 0
Titanium 0 0 0
Potassium 0 0 1 12
Boron 89 12 61
Silicon 4 3 6 4
Sodium 3 4 4 14
Calcium 1938 1752 2353 1941
Magnesium 383 406 205 770
Phosphorus 772 730 787 903
Zinc 905 765 939 1157
Barium 0 0 4
TBN 4.4 7.6 9.03
SUS Visco @210: 70.7 68.9 12.1@100
Flashpoint: 380 390
Fuel %: 0.8
Antifreeze %: 0.0 0.0
Water %: 0.0 0.0
Insolubles %: 0.4 0.3