Blackstone results: Bodhi's first report card - Page 2 - PeachParts Mercedes-Benz Forum

BodhiBenz1987 · #1 01-18-2006, 10:08 PM

OK, so I got my first oil report frm Blackstone today. I had sent them a vile of oil that was sitting on my shelf for 4 months, but I figured that would not be a problem. Here's what they said. Any thoughts would be greatly appreciated:

"Your 213,399 mile MB engine is 'watchable' for an anti-freeze contamination problem since we found potassium slightly higher than expected. Universal averages show typical wear for metals for an oil from this type of engine after about 8,715 miles run on the oil. Your oil was in use for only 3,100 miles, and we found wear at around average levels and in correct balance to show normal mechanical parts inside. Air and oil filtration appear normal. This was 14W40 diesel-use engine oil with no fuel or moisture in it. Try 5,000 miles use and check back."

Aluminum 2 (Universal Avg., 3)
Chromium 1 (2)
Iron 17 (27)
Copper 1 (11)
Lead 0 (2)
Tin 0 (0)
Molybdenum 4 (14)
Nickel 3 (2)
Manganese 0 (1)
Silver 0 (0)
Titanium 0 (0)
Potassium 10 (8)

Boron 42 (28)

Silicon 3 (6)
Sodium 1 (2)
Calcium 3323 (2797)
Magnesium 13 (278)
Phosphorus 1086 (1130)
Zinc 1192 (1328)
Barium 0 (0)

SUS Visc. at 210F: 79.4 (69-78)
Flashpoint: 435 (>415)
Fuel%: <.05 (<2)
Antifreeze: 0 (0)
Water: 0 (<.1)
Insolubles: .4 (<.8)

I need to go back and read the "what it all means" section of the Blackstone site, but I'm wondering how much I should be concerned about the K level. Does it mean I have a cracked head looming? I noticed there is no actual antifreeze in the oil, per the percentages at the bottom of the report. They suggest I try 5,000 miles on the next oil batch, but I've always done 3K and that seems to be the recommended interval among MBers. Should I try a 5K batch to see what results it yields?