The bulletin reads 6VE1, so its entirely relative to our engines.

It also states that
"The sump and dipstick design is such that for a vehicle under normal driving conditions, customers may need to add oil before the next service"

Thats seems a tad lame for one of these early model gas-o-line 'engines' manufactured at the turn of the century. 1.5 Quarts per 3000 Miles... But we know that part already. We must be getting oil loss through the dipstick?