well how does it look? it's a cm870 with a little over 20,000 hours on it. Mandate was removed about 1,000 hours ago and has had about 6 oil changes since.[
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Since nobody has responded I guess that means everything looks normal
At a glance, I did not see anything that stood out.
There is a whole lot more to ensuring someones de-mandate is safe for the engine than just oil sampling.
What does your boost get up to max if you push it during a long hill climb? -- Oil temps in a long pull? -- EGT's (or manifold temps)?
What color is your oil generally? -- How long does it take to turn dark?
Any black smoke when you get on it in low rpm regions?