A vague itch-pain accompanies the debris removal, but the relief that comes with it more than makes up for the discomfort. Even if it does occasionally cause new leaks; slow trickles of grease-like fluid that he only seems so concerned about. If they were larger leaks, he would worry: if they were more numerous, he might. A handful of slow ones while under repair...

They give at least a vague excuse to consider his next words carefully. How much does Mikaela- no. How much can...no, that doesn't suit either.

Optimus sighs heavily, shaking his head as he moves his hand away from the torn line.

"...I am not certain it was only Decepticons."