Quote Originally Posted by dukeofmuffins View Post
... How then can a customer know the service was done, barring a lab test ...
IMO, the very simple answer to that question is you can't know. B&G is telling you the additive they use can turn the red fluid grey. How can anyone (who is not a chemist or in the petroleum business) say that is not the truth?
Yes, it smells like fish and may be total BS, but how can anyone who is not in that profession know for certain?

For $25 plus shipping, you can have Blackstone Labs analyze this tranny oil (there are probably other labs who also do this same thing). That report should come back reading that the fluid is basically in like new condition. So if the report comes back looking like old fluid, it means either they stirred up a bunch of nasties with the flush and didn't clear them out, or else they didn't do the work at all.
And (if it did come back bad), with a negative report like that in hand, even their best dealer dance couldn't get them off the hook.
JMHO, but without a lab report, it's all just speculation.