when i first seen the 0w-40 in late 97 it was 52.50 per 5 gal. i used it a few times in my powerstroke (7.3). at the time i couldn't justify all of that extra money for just oil, so i stopped using it. about two years ago i decided to try it in my 6076 jd, (long story in another post) price had increased to about 105 per 5 gal., i looked at the pail and it had date it had been filled, 11/12/97!!!!!!!!!!!, same batch i had bought 10 years earlier for 52.50!!!!!!!!!!!!!! i cried foul but to no avail.