http://www.joegibbshotrodoil.com/hotrod/index.html I'm thinking about trying this suff and some of thier break in oil in my new 408 I'm building.....just looking for some opinions. It's a little over $7 a qt. but I only change oil in my '35 one a year anyway. After 12 years I still have to look closely to see the oil on the dipstickso I don't change it too often.