Stand Mixer: Leaks oil

Oil can separate from the lubricating grease inside the mixer gear case and leak down the beater shaft if the mixer sits idle for long periods, the grease overheats during use or the grease permanently breaks down inside the gear case.

If your mixer sits idle for weeks at a time, you may see a few drops of oil dripping off the beater shaft the next time you use the mixer. Over time, some oil can separate from the solid grease that lubricates the gears inside the mixer. Use the mixer regularly to prevent oil from separating from grease and leaking down the beater shaft. If you haven't used your mixer for a month or more, run it at the highest speed for 2 minutes before using it to mix ingredients. This process remixes the separated oil and grease to prevent oil from continuing to leak down the beater shaft while using the mixer. Attach the pouring shield to the bowl or use an old towel or rag to block oil that may splatter while running the mixer to remix the grease and oil. At the end of 2 minutes, turn off the mixer and wipe off any oil that leaked out along the beater shaft or in the bowl.

Oil can also leak down the beater shaft if you use the mixer constantly for more than 30 minutes because the grease overheats and the oil separates from the grease. Stop the mixer and allow it to cool when you see oil leaking down the beater shaft during constant, heavy use.

If you use the mixer regularly and oil leaks constantly from the mixer even during light use, then you'll likely need to replace the grease because much of the oil permanently separated from the grease. Replace the grease with stand mixer food grade lubricating grease.

stand mixer

These repairs may help solve your stand mixer problem

Replace the stand mixer lubricant

Replace the stand mixer lubricant

Under normal service conditions, the mixer will not require lubrication for many years. The gearbox contains 6 ounces of Benalene 930-2 grease. If you see oil dripping from the planetary gear drip ring, the grease is breaking down and it needs to be replaced.

Symptoms common to all stand mixers

Choose a symptom to see related stand mixer repairs.

Main causes: lack of electrical power, wiring failure, worn carbon motor brushes, bad drive motor, tripped overload switch, control problems
Main cause: worn carbon motor brushes
Main cause: attachment clearance setting needs adjustment
Main causes: phase control board failure, wiring connection problem, faulty electronic control board
Main causes: bad wiring connections, faulty speed control plate, electronic control board failure
Main causes: bad worm gear, damaged planetary gear assembly
Main causes: bad lubricating grease, mixer sitting idle for weeks at a time, mixer running constantly for more than 30 minutes

Repair guides common to all stand mixers

These step-by-step repair guides will help you safely fix what’s broken on your stand mixer.

September 20, 2015
By Lyle Weischwill
How to replace a stand mixer worm gear

Here’s how to replace the worm gear in your stand mixer if it’s worn or damaged.

Repair difficulty
Time required
 30 minutes or less
September 20, 2015
By Lyle Weischwill
How to replace a stand mixer phase control board

The phase control board works with the governor and control plate to control motor speed. Replace the phase control board if defective.

Repair difficulty
Time required
 30 minutes or less
September 1, 2015
By Lyle Weischwill
How to replace stand mixer motor brushes

If the carbon brushes are worn and damaged, replace them using these steps.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all stand mixers

Use the advice and tips in these articles and videos to get the most out of your stand mixer.

January 18, 2016

How to use a multimeter to test electrical parts video

By Sears PartsDirect staff

Learn how to use a multimeter to check for wiring problems in an appliance that's not working

December 1, 2015

5 secrets for getting great stand mixer results

By Sears PartsDirect staff

Find out five tips and techniques to help get the most out of your stand mixer.

September 1, 2015

Stand mixer common questions

By Sears PartsDirect staff

These common questions and answers can help you make the most of your stand mixer.