HEY PAUL 84 was when they went to the dual element filter,suppossedly for a 7500 mile change , or every other oil change at3750, but the techs still changed them at 3500-4000 like they should have been anyway , and boy did some of the customers scream about the price of those things early on, they are about half now what they were , and yes the did come with the stainless steel oil cooler on the later filter (every price one of those , be sitting down , they are exp) jerry