Does he tell him? Not too many actually know about his diet, and he likes it that way, less bots out to actively kill him. If it were to get out, well he's doomed already, but his death would be far sooner. He might not be able to guarantee that his paintjob is flawless.

"I have a special diet..." It's no more than a quiet mumble. He isn't sure about this.

"So. You have to report to your Autobot commanders whenever a Decepticon comes to see you?"