God help you if they have to remove the engine - they might slip and you'd find the grill on THIS side of the Atlantic.
Sorry, I couldn't resist... I have, on occasion, put extra "beef" on a stubborn fastener, and the "oops" that followed was, and is, the stuff of legend amongst my friends.
'96 E300D 58k mi (wife's daily ride)
'95 Audi 90 118k mi
'92 GMC Suburban 138k mi
'85 300SD 230k mi (my daily ride)