Bxnanaz

I would not have drained it personally. You were fine. I’ve used 8 single quart bottles, as well as used 8 quarts from 2 5 quart jugs and both have got my right at the full line

Just swap it into M6 at highway speeds if you dislike it so bad. You shouldn't be able to tell

What about vacuum pump?

I think it's more due to the gauges actually being decent instead of most other manufactures putting in dummy gauges

In the past 785 miles I've gotten 22.0. 5.3 DC 3.42

2017 Silverado LS DC 2x4 5.3 4.42. 2600 miles. Been averaging 21-23.5 unloaded and 12-13.5 towing my race car (around 5,000 pounds car and trailer). Couldn't be happier

Looks damn near new