Here are the results from my recent trip around Bolivia, with temperatures from -10 C to +56 C., full of dust.
Full story, links to copy of the analysis GPS files and some pictures are Torturetest
1999 Toyota 4Runner 3.0 Turbo Diesel
Delo 15W-40, 21 days, 5200 kilometers
Stock Toyota Denso air filter that started with 19,000 km on it. Denso diesel and oil filters.
Iron 11
Chrom 1
Lead 21
Copper 2
Tin 0
Aluminum 3 (from the dirt)
Nickel 0
Silver 0
Silicon 9
Boron 1
Sodium 7 (drove acrosss the salt flats)
Magnesium 10
Calcium 3275
Barium 0
Phos 1385
Zinc 1427
Moly 1
No fuel, water, glycol
Visc 14.92
Soot/solids 0.9
TBN 8.8
Full story, links to copy of the analysis GPS files and some pictures are Torturetest
1999 Toyota 4Runner 3.0 Turbo Diesel
Delo 15W-40, 21 days, 5200 kilometers
Stock Toyota Denso air filter that started with 19,000 km on it. Denso diesel and oil filters.
Iron 11
Chrom 1
Lead 21
Copper 2
Tin 0
Aluminum 3 (from the dirt)
Nickel 0
Silver 0
Silicon 9
Boron 1
Sodium 7 (drove acrosss the salt flats)
Magnesium 10
Calcium 3275
Barium 0
Phos 1385
Zinc 1427
Moly 1
No fuel, water, glycol
Visc 14.92
Soot/solids 0.9
TBN 8.8