2024 Street Glide.
Disclaimer: I am not mechanically inclined so rely on my dealer for maintenance and repairs, and yes they have fed me a rasher a couple of times but at least they take it well when I call them on it so we don't need to discuss that.

I bought a fancy new electric oil gauge and installed it. It immediately started flashing code 3, cold, overfull. I went back to the parts/service writer and showed him what it was doing. The dealership just completed the 10,000 mile service the week before. He took the issue to the service manager who came out and looked at it, even pulled a stock dip stick from a different bike, said the oil level was "ok". I mentioned another new owner, 2025 Road Glide, had issues after a recent service of blowing oil and it created a lot of smoke. The more experienced riders he was with took the syringe from the med kit and pulled some oil out fixing the issue, kind of.

The service manager commented that the new Gen 2 M8' are "finicky". No further explanation. Those kinds of statements always make you wonder. Anyway, he suggested that I get an S&S Oil Vent kit and install it.

So the question of the day is: Should I get a crankcase oil vent kit?

 

On a 2024 model you already have a built in oil vent, no need to waste your money on a S&S kit.
Read your owner's manual and adjust your oil level accordingly IAW how to check your oil level. It may be overfilled while cold but normal when hot/warm.

Ref:8
29400448
VALVE,ENGN BRTHR,COVER ASSY | top, with 34800071 and 34800043 (black)






Ref:11
62700324A
OIL LINE,BREATHER | breather

 

I thought it would be the other way around, doesn't oil expand when it gets hot?

 

Still feeding you a rasher.

If they determined the oil level is correct and the part you described is an actual Harley Part, they need to give you another one that works correctly or refund you your money.

What rasher have you all ready called them out on?

 

See edited post above with diagrams. Oil may drain back into the oil tank once the engine is shut off and not running. When running and warm the oil is circulating and up in all channels of the engine. Read the owner's manual.

Oil does not expand that much when hot.

Ditch the fancy electronic dipstick gauge and rely on manual verification on the stock dipstick.

 

1. My new SG has all the current software and performance updates they told me. Yet, when it was throwing codes on the blue ridge parkway and I got in for service they told me they had to flash all the modules and install updates.
2. I read on the forum about some 24's having issues with the rear brake "catching" when first applied. I didn't notice it too much riding solo, but my one up would knock her helmet against mine, normal was the original response, then I found the string with the service bulletin attached, took it in, big huddle in the back office, phone call. An hour later no more catch on the rear brake.
3. Over inflated tires after service. TPMS was giving me messages, I corrected that one myself, but that stretched my mechanical abilities.

I like and trust my dealers service department. I have no issue with people making mistakes or not having all the correct answers, as long as they are willing to openly talk about it. Lord knows I have made a few mistakes.

 

These new Harleys remind me of back in the 60s starting out. Are TV was in a metal box. About ever 6 months it would start to roll.

We would pull the tubes out and carry them to the Standard Drug Store and check them in their machine. It was pretty reliable and a new horizontal tube 6CG7 would fix it up.

Didn't take long to realize we only had to pull and check one tube.

Should have bought a bunch of those tubes.

Now people who think a Harley won't run without a add on tuner are saying the radio is interfering with it.

 

I recently bought a 2020 bike, and the prior owner put that same fancy electric dip stick in the bike. That electric dipstick is kind of weird and quirky.... and pretty much worthless IMHO...

Unless the bike is up to temperature, it will always show the "oil cold" in the window.

After the bike is at temp, it will show the temp, then "Overfilled". If I pull the dipstick and wipe the oil off the stick, reinsert it, and push the button, it will show the temp and then the oil level. I suspect oil gets splashed around on all the electrical contacts, making it always show overfilled unless I wipe off the stick. Perhaps if I waited longer, any splashed up oil would run down off the contacts and give a good level, but I really don't have time for all that....

When the electric level scale works, it is different from the scale on the dip stick:
If the dip stick scale shows halfway between add and full, the electric level shows full
If the dip stick scale shows 25%-30% above add mark, the electric level shows 75%
If the dip stick scale shows 60% above add mark, the electric dip stick gives me the "Overfilled" message.

I've been meaning to buy an OEM dip stick, to see if the embossed scale on the electrical dip stick matches the embossed scale on OEM dip stick for my 117" engine.

Bottom line, IMHO, pushing a button to check your oil level on a motorcycle is a pipe dream....

I strongly suggest that you learn to check your oil the old fashion way, and rely on the embossed scale, not on the electric dip stick.


FWIW...

On all my bikes, I always check the oil AFTER a ride, when it's up to temp, about 10-15 minutes after shutting it down (most oil will be settled by then). If the oil is at a good level, I am content. I usually shoot for approximately half-way between add and full after my oil changes.

The next time I go for a ride, if I don't find a puddle of oil under the bike, I know the oil level is good for the start of my ride....


PS- There is no reason to mess with or supplement the OEM oil breather system on your bike. You have the newer style, transmission cover breather system that is far superior to the old head breathers. If that OEM breather is not handling your engine blow-by, you have an issue with your engine that needs to be investigated...

 

Interesting, says to check oil hot. So will have to go ride then work on it some more. I am slightly over full. It's not blowing or leaking so I'll leave it alone. But at least I am reassured that the crankcase is vented and extra oil will be pushed out the vent and not up into the air intake or other inappropriate places. .

I lined the rubber rings up to see how the ranges compare. The low oil marks line up, that's the ones I am most concerned about.

 

I always fill to a half quart low when cold. It reads close to full when hot.