There is no way to accurately measure oil consumption if you drain and refill every 1000 miles (which is ridiculous).

If you are overfilling the tank, the oil is going to blow out the breather, then you will just keep adding, it keeps blowing out.

Most experts know that keeping the oil level at halfway between add and full on the stick is the correct level, any higher than that may cause oil to be expelled out the breather system.

Stop getting all puffed up and insulting because someone posts something you don`t like.

And please, stop bragging, most of us have many decades of mechanical experience here, you are not talking to kids.

 

New 23 Heritage just ate about 1/2 quart on a 2,500 mile trip. My buddies with newer bikes seem to be reporting about the same consumption. My old twin cam didn't start eating that much oil until it was over 20k miles.

1 quart every 1,000 miles seems a bit high.

 

I said it. Call a dealer service department. Ask the question.

I don’t like it either, but I didn’t make that up.

Here’s the tech service bulletin from 2017, for M-8’s.

https://static.nhtsa.gov/odi/tsbs/20...24214-9999.pdf

 

I read the attached service bulletin and have to admit you were right.
That's finally vindication for all of the metric bike guys who saw me ride H.D. and told me they'd never own a Harley. I've had metric and Harleys and never saw oil consumption like that on any of my prior 36 bikes ( many of them were bought used). I've only had a couple of old beater cars that did that bad!
I started a thread entitled, " Am I the only one?" A couple of months ago, on this forum. It was the result of a test ride on a 2019 Heritage Softail, with the M8 engine. Some guys on here really didn't like what I said. said basically that my twin cams ran nicer, my wife & I saw no better ride, the seat sucked for 2-up, and I didn't like the "whirring" sound of the M8.
​​​​Maybe it's a lucky thing I didn't want to buy it!

 

1/2 quart in 2,500 miles is fine.

 

Couple of vids on this subject that may be helpful-




Kevin

 

I have never had a Harley oil consumption issue and I have owned a few, I have however had a oil consumption issue in a new Mustang and my wife had a new VW brake issue that we tried the Lemon Law procedure, the VW rep came in, bla, bla , bla. I have never had any luck with the rep as when the "company" rep says it's normal what do you do at that point this side of legal action?

I know everyones situation is different but with the VW issue ( in our case if you just tap on the brake you almost flew through the windshield) it was simply easer to trade the car for a new one as I had to keep my wife and kids safe. She got a new car and I could walk away from this issue! It did cost us some money but not a crazy amount. My time is money and I had to get the wife back on the road.

The thing is when the dealer and the VW rep refuses to admit the car has an issue, he can't exactly lowball a trade so we traded that POS. This guy actually was happy to get her car and stated "this one i'll sell as Certified" don't you just love car salesmen?

Op, I also change oil and fluids very early in my bikes, always have...
Also, I have heard NON synthetic oil may help with oil consumption and I know for a fact NON synthetic oil is less noisy in the M8!

"Yep, I change my oil every 3,000 miles or when I get board, whichever come first" Hank Hill...

 

I cold fill to near mid-point, drive the bike for one-hour and idle for two-minutes. Never add if in the normal range on the stand. No oil in the filter and seems to be running normally for a HD. Just after a 200-mile ride and smelling oil burning had me concerned especially after idling for two-minutes and checking the oil level (per HD directions) after being very low when returning home. Guess I'm just too particular after riding import sport bikes since 1974. Anyway, life goes on

 

Your other bikes were wet sump, the Harley is dry sump. The wet sump oil level is foolproof, not so with a dry
sump.

 

I'm not a veteran Harley owner but this bike (M8 motor) doesn't have an oil tank so how is it a dry sump motor? Not to disagree with you but the oil goes into a pan not a tank. Anyway, I followed the owner's manual and input here on correct oil levels and adjustments and after a 200-mile ride was down on levels significantly, plus smelling oil burning from the exhaust. Anyway, I have an extended warranty and just going to ride it till she quits, too old now to stress about it.