Red Line 5w-40 7786 miles 2003 BMW 330Ci M54

Messages
1,048
Location
Indiana (IN)
This is the same oil as my previous 5100 mile UOA with another 2600 miles of mostly highway miles. Houston-Indianapolis Saturday 06/06 and Indianapolis - Houston 06/13 about 1050 miles each day. Cruise control set to about 5 over speed limit with an occasional jump to 80-90mph passing. Oil temps about 100-110 over outside air temp. (62-97F) I pulled about 1/2 a quart for the 5100 mile UOA - replaced it with Red Line 5w-40 (old formula). The oil was changed this time with fresh 5w-40 from Red Line (from Racer Parts Wholesale in Indianapolis). The copper was only 4 ppm after almost 50% (2600+) more miles compared to the original 5100 mile UOA.
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Date	5/5/05 10/5/05 3/6/06 6/6/06 3/7/07 6/7/07 3/8/08 9/8/08 10/8/08 6/4/09 6/14/09
oil mi	5011	5000	4300	5958	4514	5347	5017	3839	7250	5100	7786
Tot mi	21130	26100	31407	37365	41879	47226	52245	56084	63334	68400	71120
											
Make up	0	0	0	0	0	0	0	0	0	0	0.5
Oil	BMW	Castrol	Castrol	BMW	Castrol	Castrol	Castrol	Castrol	Red line Red Line Red Line
Weight	5w-30	0w-30	0w-30	5w-30	0w-30	0w-30	0w-30	0w-30	5w-40	5w-40	5w-40
											
Filter	BMW	Mann	BMW	BMW	Mann	Mann	Mann	Mann	Mann	Mann	Mann
											
AL	4	2	2	2	2	2	4	2	2	4	2
CHRO	1	0	0	0	0	0	0	0	0	0	0
IRON	9	7	6	4	8	6	11	9	7	7	9
COPPER	28	22	15	18	22	8	15	9	5	17	21
LEAD	2	2	2	1	1	1	1	0	0	0	1
TIN	0	1	0	0	1	1	0	0	0	0	1
MOLY	124	19	4	104	16	4	3	2	3	149	207
NICKEL	1	0	0	0	0	0	0	0	0	0	1
MANGA	3	1	1	1	1	1	2	1	1	1	3
SILVER	0	0	0	0	0	0	0	0	0	0	0
TITAN	0	0	0	0	0	0	0	0	0	0	0
POTASS	9	1	6	1	2	0	8	3	2	3	5
BORON	38	9	3	21	4	2	3	2	1	4	5
SILICON	5	3	3	3	3	2	4	3	4	6	7
SODIUM	2	4	3	5	3	3	4	2	3	9	12
CALCIUM	3446	2125	1704	2463	2702	2985	1864	1891	2452	2142	2574
MAGNE	18	311	455	83	129	147	448	551	86	30	36
PHOS	853	748	781	662	737	782	872	885	988	1032	1134
ZINC	1050	889	964	847	878	1001	1115	1087	1282	1228	1446
BARIUM	0	0	0	0	0	0	0	0	0	0	0
											
SUS212	65.6	62.5	63.2	64.1	63.8	65.8	64.2	65.5	73.9	78.2	78.4
cSt100C	11.76	10.91	11.11	11.35	11.27	11.82	11.38	11.75	13.97	15.08	15.11
Flashpt	375	375	325	415	360	395	380	400	440	385	410
Fuel %	<0.5	0.5	3	<0.5	1.3	<0.5	TR	<0.5	<0.5	TR	<0.5
Antif% 	0	0	0	0	0	0	0	0	0	0	0
Water %	0	0	tr	0	0	0	0	0	0	0	0
Insol %	0.3	0.3	0.2	0.3	0.2	0.2	0.2	0.3	0.3	0.3	0.3
TBN	1.8	4	4.7	3.2	2.9	2.6	2.9	4.9	4	1.7	1.3

Blackstone comments - no oil cooler on the car- Copper continues to increase, reading more than 3-times higher than universal averages, which are based on 6,700 miles of oil use. Your oil was in use 1,086 miles longer, but copper is not a metal that typically increases with miles of oil use. So it appears your M54 has a bushing that is wearing poorly. One other source could be a crack in an oil cooler, if your car has one. Oil viscosity was in the 10W/40 range. The TBN was 1.3, showing very little active additive. We suggest short (4K-mile range) oil changes. That can help control accumulation of copper in the oil.
 
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Messages
1,877
Location
Pacnw
What are the guesses out there for the cause of the sporadic copper readings? One poster speculated on your other post that copper went up with fuel in the oil. What could be the deal with the copper, is it a bushing like Blackstone speculated?
 
Messages
33,938
Location
Southern NJ
The 10/08 Redline #'s were good. I don't think it's the oil. Tbn was 4 for that sample. The last two it's dropped a lot. Different lab?
 

FZ1

Messages
4,727
Location
Texas
Thanks for the interesting info. The oil is shot. Low tbn even with a top up. 5k max oci. You ought to take Gary up on his offer.
 

shanneba

Thread starter
Messages
1,048
Location
Indiana (IN)
All UOAs are from blackstone. The difference is mostly highway miles on the 10/08 and mostly short trips on the 06/04/09 UOAs. This UOA is the same oil as 06/04/09 with about 2600 more highway miles and there was very little change, 4 ppm copper, 2 iron....and AL went down from 4 to 2... surprised no one has mentioned that or is a 50% variation normal at such small ppm readings?
 
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Messages
1,877
Location
Pacnw
Regarding the Al, I bet if you sent in exactly the same oil 5 times, you'd get different Al #s for each one, lets say from 1-5 ppm. The labs just aren't that precise from what I have seen. But by using the same lab consistently this noise can be minimized somewhat. I noticed this with Ca, P, and zinc too, where UOAs in the same run can increase in ppm.
 
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