After reading all the hype and praise about this oil, I went out and bought six quarts of this at my local Autozone. I gasped at the price, $5.19 a quart. I bought it anyway, says made in Germany on back. I bought a 2004 Ford Super Duty back in Sept. of 2004. It has a 5.4 gas in it. I have been running MC 5w20 in it until I change it to the GC. My last Ford truck went over 300,000 miles on regular MC in a 302 V8. My brother in law works at a Ford dealership in parts, so I always got the oil really, really cheap . I am going to run this GC for 8,000 to 10,000 miles and beat the snot out of this oil, (everyday work truck) truck already has 31,000 miles on it and then run a UOA on it. I was running the MC 5w20 at 5,000 mile changes. Who else runs GC in a Ford modular engine? Do you like this oil? Thanks!!