Have the service manager put that in writing! Then contact HD customer service, that's BS!
To speak with a Harley-Davidson customer service representative call (414) 343-4056.
And if the customer disservice rep gives you a crock of crap, the next call needs to be to a lawyer.
Question: Did the engine use excessive amounts of oil prior to the "enhancement"? If it didn't but it started immediately after the work was done I believe you could make a case that something wasn't put back together quite right. If the dealership created the problem, it doesn't matter what BS standard H-D posts, the dealer owes you another repair.
Your post indicates your consumption is 1 quart per 1000 miles, and the standard your dealership quoted to you is 1 quart per 1500 miles. Assuming you accurately measured your consumption, it is worse than the standard they told you and I don't understand why they haven't arranged to fix the problem. Of course, I imagine they will require a controlled consumption test to verify your claim. Basically that goes something like this:
-Dealership changes oil and filter, marks oil level on dipstick, seals drain plug and dipstick.
-Owner rides motorcycle and stops at the dealership at predetermined mileage intervals to have them check the oil level and add oil as needed, documenting exact amounts of oil added on the repair order each time.
-At a specified total mileage, the owner returns the bike to the dealer and they add oil to bring the level up to the mark they made on the dipstick.
-The total test miles are then divided by the measured amount of oil they added over the duration of the test to determine the consumption rate.
If the rate exceeds the "acceptable consumption" standard, repair is authorized. If the rate is better than the standard, you will be told your engine is "normal". It will be BS, but it will be documented BS.
Jerry