Boat Winterization in Appleton, WI

AJ's Mobile Marine

I/O and Inboard Packages

Package One

  • Drain & Flush all water from engine
  • Stabilize fuel
  • Change fuel filter if applicable (add $21)
  • Top off all fluids
  • 4 Cylinders, $175
  • 6 Cylinders, $191
  • 8 Cylinders, $208

Package Two

  • Drain & Flush all water from engine
  • Stabilize fuel
  • Change fuel filter if applicable (add $21)
  • Top off all fluids
  • Change oil & filter
  • Change gear lube or transmission fluid
  • Grease all lube points
  • 4 Cylinders, $348
  • 6 Cylinders, $373
  • 8 Cylinders, $391

Package Three

  • Drain & Flush all water from engine
  • Stabilize fuel
  • Change fuel filter if applicable (add $21)
  • Top off all fluids
  • Change oil & filter
  • Change gear lube or transmission fluid
  • Grease all lube points
  • Pull Drive (check & grease gimbal bearing & u-joints)
  • 4 Cylinders, $461
  • 6 Cylinders, $479
  • 8 Cylinders, $495

Outboard Packages

2 Stroke Outboard winterization Package

  • Stabilize fuel
  • Top off all fluids
  • Grease all lube points
  • Change gear lube
  •  2 Cylinders, $121
  •  3 Cylinders, $129
  •  4 Cylinders, $145
  •  6 Cylinders, $169

4 Stroke Outboard Winterization Package

  • Stabilize fuel
  • Top off all fluids
  • Grease all lube points
  • Change gear lube
  • Change motor oil & filter

*Plus cost of oil @ 16.00/qt

  •  2 Cylinders, $145
  •  3 Cylinders, $150
  •  4 Cylinders, $169
  •  6 Cylinders, $195
  •  8 Cylinders, $215

Winterization Order Form

Why AJ’s Mobile Marine is the Go-To Choice

for Winterizing

Choosing who handles your winterization can make all the difference in your boat’s long-term health. At AJ’s Mobile Marine, we’re more than just technicians—we’re boat owners too. We understand how important it is to protect your investment during the harsh Wisconsin winters.


Our winterizing packages are designed with precision and care, covering everything from fluid changes and fuel stabilization to full inspections and drive removal when needed. We tailor our services based on your engine type and usage history to ensure optimal performance come spring.


With 28+ years of marine service experience and a Better Business Bureau A+ rating, we’ve earned the trust of boaters across the Fox Valley. For reliable, thorough boat winterization in Appleton, WI, we’re the name locals count on. And because we’re mobile, we bring expert service right to your door—saving you time and hassle while protecting your boat.


Order your winterization here

Looking for boat winterization in Appleton, WI? Below are the winterizing packages offered through AJ’s Mobile Marine. By filling out the form below, you are contacting AJ’s Mobile Marine and letting us know that you are interested in one of these packages. You can expect to hear from us within one business day. Please provide as much information as possible; you will receive an error if any required fields are left blank. If the form is successfully submitted, you will see a confirmation message stating: “Thank you for your interest in our Winterizing Package. You can expect us to contact you within one business day.”


We are located in Appleton, Wisconsin, and proudly serve the Fox Valley area, including Oshkosh, Fremont, and Green Bay!