Henderson's changed my oil and filter last fall, and it took 34 qts. of 15-40, Stan. The last time BCS did it they used 30 qts. A couple other services by Peterson's and another diesel truck facility in Utah used standardized "kit" charges that didn't report specific quantities of oil used, so they're no help here, unfortunately. So I'd just take Ed's and Bryan's comments to heart, carry some spare oil on board and watch the level for a few miles, or run the engine in-place to warm and check again after its had plenty of drain back time.
Our old Pace Arrow had the issue, as a stick "recall", but we just refilled a prescribed amt. on the next change and scribed a new fill mark on the stick.
That said, when our Monterey was new I'd heard rumors also about a possible wrong mark on the stick, but don't remember having to actually do anything with ours, other than I recall there was an initial problem with the dipstick not seating all the way down on our Monterey, and BCS made adjustments. Turning the handle left or right can change the head tension that resists any springback caused by unintentional bends in the stick or even the tube. So check that the tube head as well as the stick are properly seated, just in case.
Joel
