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A 10,000mi engine oil has generally reached its life limit.
Color does not tell much.
Engine oil gradually loose its original properties and more importantly, the additive package slowly disintegrates while it is being mixed with all kinds of contaminants. (acid, ash, carbon, rust, silica, gasoline residues and about 10 others)
Oil analysis: Don't necessary rely on those.
You'll never know if the results you'll get are accurate.
proof? Have 5 samples taken of the same oil coming from the same car at the same time and sent them to 5 different oil analysis outfit.
You'll be amazed by the results. They will all be vastly different.
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