When you produce the number of vehicles a car company produces in a year, saving a nickel on each car really adds up, and its all company profit! The elimination of that $5 windage tray (material cost and labor to bolt it in) can put a pile of money on a 50,000 car production run, into a companies profit margin. Why spend the money to install it at the factory if you can sell it to the customer over the counter for a lot more money?

Do not assume anything a car company did or did not do was for any other reason then to cut a few cents off the production cost for each vehicle. The first few months of a new vehicle production may have gotten by the bean counters, but you can bet the in process version, and most certainly the following versions didn't escape the bean counters input. Gene