[101Volts]

More reports:

1: I changed the oil to Amsoil Heavy Duty 5w40. This is thicker than Shell T6 5w40 both cold and hot and I may see a slight drop in F.E.; OTOH engine longevity should be greatly increased with this oil and the bypass filtration. (It was a big concern given how many repairs this Suburban's had since purchase.)

2: For the 250 miles I drove with T6 5w40, the Opti-Lube additives and the bypass filter I didn't feel like the fuel efficiency dropped much although the air dam was off. Going up hills at 45 MPH the vehicle felt like it had slightly more power and didn't have to downshift as much; the SG II read slightly higher too.

3: I have better hardware to attach the air dam.

4: On subject of rear wheel skirting, has anyone here made skirting with louvres near the back to move air pressure out of the wheel arch without introducing more pressure?

5: I'm planning on making the wheel skirting easy to remove with a drill; I'll use lock nuts "glued" (not with glue, I don't know the product's name) on to brackets which will attach to the vehicle's already existing screws that hold the plastic wheel arch extensions.

6: I have a dual engine cooling fan out of a 2000 Dodge Caravan w/ the 3.0 engine. I almost feel like it's a joke to ask yet would this be enough to cool the 6.5? I don't feel like it is.