Mercury – Oil Change Kit, 75/90/115HP EFI 4-Stroke, 1.7 Liters | Maintenance | 8M0081917

Overview

When you run these mid-range Mercury FourStroke motors, an oil change isn’t just routine—it’s what keeps them sounding steady after long days on the water. This kit keeps things simple by bundling the right oil, filter, and seals for the 1.7-liter EFI engines, so you’re not digging around for the correct pieces. It’s the same setup most techs reach for because it cuts down on guesswork and keeps the job clean. If you’ve ever pulled the cowling after a long weekend run, you’ll appreciate having everything laid out in one box.

Key Features

 • Matched 1.7-Liter Components – Gives you the exact oil, filter, and seals these engines are built around.
 • Mercury 25W-40 Marine Oil – Holds its thickness under heat and keeps the engine feeling smooth on long runs.
 • Fresh Oil Filter – Helps keep contaminants out so the motor maintains a steady, predictable tone.
 • Drain Plug Seal – Locks down a clean, leak-free service once everything’s tightened back up.
 • Plastic Drip Tray – Helps control the mess when you crack the drain plug.
 • OEM Marine Formula – Uses corrosion-resistant additives designed for real on-water conditions.

Engine & Boat Compatibility

 • 75–115HP EFI FourStroke
 • 1.7-Liter
 • Serial No. 1B366823–2B094995
 • FourStroke Series

Performance & Practical Benefits

A fresh oil change on these motors usually brings back that steady mid-range hum you expect from a well-kept Mercury. They tend to settle into a smoother idle, and the throttle feels a bit more predictable coming out of the hole. High-rpm pulls feel cleaner too, especially after long hours when heat normally starts creeping in. It’s the kind of upkeep that pays off when you’re running miles back to the ramp in choppy water.

Why Buy OEM

OEM kits take out the uncertainty. The oil and filter match Mercury’s own calibration and flow specs, so the motor behaves the same every time you service it. The additives hold up against salt, heat, and hours of running, and the sealing parts fit the way they should. It’s a straightforward way to keep the engine reliable without cutting corners.

FAQ

Q1: How can I tell when this oil kit is due?
A: Most folks notice darker oil, a shift in idle tone, or simply hit their service hours and swap it out before issues show up.

Q2: Do I need any kind of reset or calibration after the change?
A: Nope—just warm it up, drain it, refill, and recheck the level. That’s it.

Q3: How does the oil hold up in saltwater environments?
A: The marine additives are built to push back against corrosion, even when the engine lives on a salty dock.

Q4: Anything useful to know during the install?
A: Let the engine warm briefly—warm oil drains cleaner and makes the job quicker.

Q5: What’s the first sign the filter’s starting to fall behind?
A: You might hear the engine lose its smoothness or see the oil pressure wander a bit before it becomes a bigger problem.