Apparently, my Fram Ultra luck must be running out-I have been having worsening ADBV action with an XG2 on the MGM in my sig, a 4.6 2V. It got bad enough that just a couple hours of sitting was enough to get the dreaded timing chain slap. The Magnatec 5W20 only has about 3000 miles on it, so on went the DREADED MC FL-820S! I'm going to grit my teeth, run it 3000 miles (or until the ADBV starts acting up). Go ahead & laugh-I'll cut it open when OCI time comes along, and I am careful to baby it cold (got a little piston slap, goes away inside of 1 mile).