GC M05 UOA results
07-22-2005, 02:20 AM
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GC M05 UOA results Daily driven 3,000 miles on oil, lot of WOT, LT headers no cats intake and tune LS1.
M05 Castrol 0W30 results (PPM)
Al 3
Chromium 2
Iron 15
Copper 69
Lead 11
Tin 2
Molyboenum 8
Nickle 1
Manganese 1
Silicone 14
Sodium 9
Calcium 2561
Flash point 400
TBN 7.5
Last UOA done by Titan Labs with green GC heres a link, engine had 7500 miles at that time.
http://www.ls1gto.com/forums/showth...ighlight=GC+UOA
so my copper PPM has gone down slightly which is good, Lead was same PPM on both UOA. The results show the M05 GC lives up to the German Castrol name. Next sample will be from the M1 5W30 synthetic I am currently running, expect a month for M1 UOA.
M05 Castrol 0W30 results (PPM)
Al 3
Chromium 2
Iron 15
Copper 69
Lead 11
Tin 2
Molyboenum 8
Nickle 1
Manganese 1
Silicone 14
Sodium 9
Calcium 2561
Flash point 400
TBN 7.5
Originally Posted by blackstone labs
Fraser: New GM V8s tend to leave copper high in their oil for the first 50,000 miles or so, we've never seen this lead to any sort of mechanical problems. The Lead, from bearings, is a little unusual so you will want to monitor this wear metal. Bearings are the heart of your engine and if you want longevity, its best to keep this at around an average level. The upper cylinder wear metals look ok and we found no harmful contamination in the oil that would affect lower end wear. The TBN was quite high (7.5). Try 4,000 miles for next oil sample.
http://www.ls1gto.com/forums/showth...ighlight=GC+UOA
so my copper PPM has gone down slightly which is good, Lead was same PPM on both UOA. The results show the M05 GC lives up to the German Castrol name. Next sample will be from the M1 5W30 synthetic I am currently running, expect a month for M1 UOA.
