UOA performed by Blackstone Labs has been copied below. Oil filter was MANN brand (OE replacement). A link to my VOA for this same oil can be found here ( LINK )
The purpose of performing a UOA on this oil was to determine whether or not it was "safe" to go more than one track event on the same oil. During the 2,250 mile interval (1/3qt make up), the car saw appx. 550 miles under track conditions at Watkins Glen (2 days) and Mid-Ohio (3 days). As you can see, the oil held up very well.
Previously, I used M1 0w-40 and changed the oil after every event because I didn't know any better. Subjectively, the M1 0w-40 would consistently produce a cloud of smoke after starting the vehicle following a track session. The 5w-50 cured that. I would also require about 0.5-1.0qt of make-up oil during the course of a 2 day track event with M1 0w-40. With the M1 5w-50 I only added 1/3qt over the course of 5 total days on the track.
Overall I'm very happy with the performance of the oil. I don't get the puff of smoke when I start the car after a track session. I don't use oil. The oil stayed in grade, and it looks like I could easily go to a once a year OCI, which would mean about 5-6k miles with 500-750 miles under track conditions.
I welcome any thoughts or feedback. Also, in case anyone asks, I purchased the Mobil 1 5w-50 from AV Lube ( LINK ) for under $40/case (plus tax & shipping).
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Blackstone Comments: Universal averages show typical wear levels for this Porsche engine after about 3,100 miles on the oil. You ran the oil 2,250 miles and wear metals read at or better than those averages. The insolubles were low showing the oil filter is doing a good job keeping the oil clean. There were no harmful contaminants (water, antifreeze, or fuel) found in this used oil. The TBN read strong at 11.1 showing lots of active additive left. Racing the engine puts more stress on it, but so far this engine looks good. Check back to establish wear trends.
My Results / (Universal Avg)
Aluminum 4 / (5)
Chromium 1 / (1)
Iron 9 / (11)
Copper 5 / (11)
Lead 0 / (9)
Tin 3 / (1)
Molybdenum 73/ (66) (Note; VOA shows 99 moly)
Nickel, Manganese, Silver, Titanium = 0
Potassium 1 / (2)
Boron 175/ (60)
Silicon 4 / (15)
Sodium 5 / (10)
Calcium 2579 / (2268)
Magnesium 12 / (138)
Phosphorus 776 / (863)
Zinc 892 / (1028)
SUS Visc. @ 210(F) = 75.7 / (70-86)
cSt Visc. @ 100(C) = 14.43/ (12.9-17.3)
Flaspoint = 405(F) / (>390)
TBN = 11.1
The purpose of performing a UOA on this oil was to determine whether or not it was "safe" to go more than one track event on the same oil. During the 2,250 mile interval (1/3qt make up), the car saw appx. 550 miles under track conditions at Watkins Glen (2 days) and Mid-Ohio (3 days). As you can see, the oil held up very well.
Previously, I used M1 0w-40 and changed the oil after every event because I didn't know any better. Subjectively, the M1 0w-40 would consistently produce a cloud of smoke after starting the vehicle following a track session. The 5w-50 cured that. I would also require about 0.5-1.0qt of make-up oil during the course of a 2 day track event with M1 0w-40. With the M1 5w-50 I only added 1/3qt over the course of 5 total days on the track.
Overall I'm very happy with the performance of the oil. I don't get the puff of smoke when I start the car after a track session. I don't use oil. The oil stayed in grade, and it looks like I could easily go to a once a year OCI, which would mean about 5-6k miles with 500-750 miles under track conditions.
I welcome any thoughts or feedback. Also, in case anyone asks, I purchased the Mobil 1 5w-50 from AV Lube ( LINK ) for under $40/case (plus tax & shipping).
========================
Blackstone Comments: Universal averages show typical wear levels for this Porsche engine after about 3,100 miles on the oil. You ran the oil 2,250 miles and wear metals read at or better than those averages. The insolubles were low showing the oil filter is doing a good job keeping the oil clean. There were no harmful contaminants (water, antifreeze, or fuel) found in this used oil. The TBN read strong at 11.1 showing lots of active additive left. Racing the engine puts more stress on it, but so far this engine looks good. Check back to establish wear trends.
My Results / (Universal Avg)
Aluminum 4 / (5)
Chromium 1 / (1)
Iron 9 / (11)
Copper 5 / (11)
Lead 0 / (9)
Tin 3 / (1)
Molybdenum 73/ (66) (Note; VOA shows 99 moly)
Nickel, Manganese, Silver, Titanium = 0
Potassium 1 / (2)
Boron 175/ (60)
Silicon 4 / (15)
Sodium 5 / (10)
Calcium 2579 / (2268)
Magnesium 12 / (138)
Phosphorus 776 / (863)
Zinc 892 / (1028)
SUS Visc. @ 210(F) = 75.7 / (70-86)
cSt Visc. @ 100(C) = 14.43/ (12.9-17.3)
Flaspoint = 405(F) / (>390)
TBN = 11.1