This Is How You Know If Your KitchenAid Mixer Leaks Oil

Mixers Leaking Oil

If you wake up one day to see that your KitchenAid mixer has an oil leak, there is no need to panic. An oil leak in a KitchenAid mixer is quite common, but if it continues, it will give you trouble, and your mixer will be less lubricated.

To figure out what makes your KitchenAid mixer leak oil, I looked into this issue a little deeper.

Do KitchenAid mixers leak oil? Yes, they might. An oil leak happens when the oil separates from the grease inside your KitchenAid mixer’s gear. But this is not something you should worry about.

This article will discuss some of the possible reasons why oil leaks from KitchenAid mixers to help you find out which one is causing the leak in your appliance.

Check out the simple fix to this issue, as well as some other information about oil leaks.

Why Do KitchenAid Mixers Leak Oil?

This mess happens when the grease residing in the KitchenAid stand mixer’s gearbox separates. As a result, the liquid grease leaks out of the mixer in the form of oil.

There are several reasons why the grease inside the gearbox of your KitchenAid stand mixer leaks. It might be due to heat resulting from overloading the mixer, lack of usage, and time.

How to Prevent a KitchenAid Mixer from Leaking Oil

If you see a little oil dripping off the beater or at the bottom part of the mixing bowl, run your stand mixer to redistribute any separated oil.

When you do this, make sure the bowl does not contain any ingredients. Let the machine run for about two minutes. Afterward, wipe off any excess oil on your mixer.

You have to do this from time to time to prevent oil leaks, especially if your KitchenAid stand mixer is stored away for a while.

It is also best to let your appliance cool completely before using it again. The reason for this is that overheating of the machine can cause oil leaks.

Step-by-Step Guide to Fixing a KitchenAid Mixer That Is Leaking Oil

Proceed to the following instructions if your KitchenAid mixer is:

  • A mixer with KSM in the model number, except KSMC50
  • Any mixer with model numbers beginning with K45 or K5

Access the Gearbox

  1. The first step is to unplug the power cord strain relief and the mixer’s rear housing cover. Utilize a Philips head screwdriver to remove the cover, then unplug the power cord from the stand mixer’s back part.

  2. Remove the beauty ring, also known as the planetary drip ring, which catches leaking grease. Utilize a flathead screwdriver to gently remove the drip ring from the planetary.

    Then, remove the planetary pin and the shaft pin, which holds the planetary to the gearbox. Utilize a pin punch and a hammer to tap the pin from its place.

  3. Remove the planetary and use flathead screwdrivers to poke around the planetary edges. Pull the rest of the component by hand, then remove the screws from the gearbox. You will need a flathead screwdriver to do so.

  4. With the same flathead screwdriver, unscrew the housing screws that hold the mixer stand’s motor housing. Take note of the one screw that has a retaining washer so you can return it to its position after the repair.

    Separate the motor housing from the mixer stand, then pull the motor out from the gear shaft while the front of the motor housing is still secured.

Remove the Old Grease

  1. Your mixer’s gearbox is expected to have a lot of grease inside. It is also normal for its grease to appear dark in color when not separated.

    Before removing the grease from your gearbox, see to it that it is the cause of the leak. You can check that by observing any sign of separation in the grease. When there’s no sign of separation, bring it to KitchenAid for repair.

  2. Otherwise, remove the old grease from your mixer using a putty knife and place it in a separate container. You have to manually turn the gears to take out all the old grease.

    You may use a pin punch to do so by inserting it in the bottom of the gear shaft. Also, make sure to remove the old grease inside the motor housing.

Add New Grease

  1. Place new grease into your mixer’s gears by using a clean putty knife. Try placing the same amount of grease that you take out from the gearbox.
  2. While filling the mixer with new grease, manually turn the gears to ensure appropriate coverage.

Reassemble Your Mixer

  1. Attach the motor housing to the mixer stand, then look for the housing’s bearing in the gearbox. Make sure that this bearing is aligned to the gear spindle, which projects out from the gears.

  2. To get the motor housing to its right position, turn the gearbox gears, ensuring that it aligns with the motor housing.

    Utilize a pin punch to turn the motor shaft. Make sure to apply pressure at the top part of the motor housing while doing so. When the gap closes, the motor housing is in its right position.

  3. Place the fasteners for the mixer housing, then return the screws under the planetary and rear parts of the housing. As mentioned earlier, ensure that the screw with a washer is placed in the right position.

  4. Apply new grease to the planetary gear before securing the planetary. See to it that the planetary gears are aligned while pressing all the pieces back into place. While pushing the motor housing, it is best to turn the motor shaft to align the gear.

  5. Before hammering the pin into place, make sure that the planetary holes and motor shaft are aligned. Stuff a small screwdriver through the holes to align them. When done, use a hammer to tap the pin back into its position.

  6. Clean the surrounding planetary area before replacing the beauty ring because tension holds it in place. Once it is clean, press the ring into position.

  7. Place the cover of the rear part of the housing back onto the mixer. Before you do so, make sure that the strain relief for the power cord is re-engaged. Fasten the screw by using a Philips screwdriver, and you’re done!


KitchenAid mixer users reporting oil leaks are not rare, but it is also not a normal thing. If you experience the same problem with your mixer, try to determine what is causing the leak before bringing your mixer to KitchenAid for repair.

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