Quote:
Originally Posted by josehb
I just had my done and the only thing is done is engine and differential fluid change the Service rep said that the power gain is just a rumer started on the internet and is not true and he owns a G80 so I belive now that is just a rumer, absolutly no power gain in my case and response is the same.
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It was a case of confirmation bias, I think. I don't see any reason to think it's more powerful after the first service. But Internet rumors live forever no matter how many times they've debunked so…