# Service bulletin M1681

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11018151
- Published by NHTSA: 2025\-05\-08
- Manufacturer's number: M1681
- Manufacturer's date: 2025\-04\-12
- NHTSA component: ENGINE; POWER TRAIN

## NHTSA's summary

SERVICE BULLETIN M1681: EARLY PRODUCTION 2025 SOFTAIL ENGINE OIL OVERFILL. PURPOSE: This bulletin informs dealers that the engine oil of a limited range of 2025 Softail models was overfilled at the assembly plant. This can cause temporary smoking from the exhaust pipe.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018151-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018151-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2025 HARLEY\-DAVIDSON FLFB
- 2025 HARLEY\-DAVIDSON FLHC
- 2025 HARLEY\-DAVIDSON FXBB
- 2025 HARLEY\-DAVIDSON FXBR
- 2025 HARLEY\-DAVIDSON FXLRS
- 2025 HARLEY\-DAVIDSON FXLRST

JSON: [/v1/bulletins/11018151](/v1/bulletins/11018151)

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