You don't have to warm up new engines they're made out of aluminum that was a procedure for old cast iron blocks. (mechanics.stackexchange.com)
With cast iron block and aluminium cylinder head, the Mercedes introduces steel pistons for a passenger diesel, for the first time. (mercedesblog.com)
The cars feature a competition prepared cast iron block engine supplied by the Carroll Shelby Engine Company, which is coupled to a period correct 4 - speed transmission with an authentic shifter. (ovcmustangs.com)