🍰 KitchenAid Stand Mixer Leaking Oil Cross-Reference & Gearbox Repack
If you pull your KitchenAid mixer out of the cabinet and notice a puddle of smelly, dark brown oil pooling around the planetary ring (the spinning head where attachments click in), your mixer’s gearbox grease has separated.
This happens to nearly every mixer eventually. When grease sits unused or gets hot, the liquid oil separates from the solid thickening agents and slips right past the internal center shaft. You do not need a new motor or an expensive service overhaul. You just need to scoop out the old slime and pack it with fresh grease.
⚙️ Core Part Specifications
| Attribute | Detail |
| Appliance Brand | KitchenAid (Whirlpool Corporation) |
| Machine Models | Classic, Artisan, Ultra Power (Tilt-Head Models like KSM150, K45SS) |
| Common Symptom | Clear or dark brown oil dripping onto the beaters or pooling inside the attachment ring. |
| Official Factory Fix | Out-of-warranty mail-in maintenance service (Cost: $150 – $200) |
| The Replace World Fix | 6 oz of NSF H1 Food-Grade Grease + Main Housing Paper Gasket |
| Est. Replacement Cost | $12 – $15 USD total / £10 – £13 GBP |
| Difficulty Level | Medium (Messy but mechanically straightforward) |
🛑 CRITICAL WARNING: Only Use NSF H1 “Food-Grade” Grease!
Do not under any circumstances grab a tube of standard automotive or machinery grease from your garage. Because this gearbox sits directly above your mixing bowl, you must exclusively use NSF H1 Food-Grade grease.
If a microscopic amount ever manages to bypass the shaft ring in the future, NSF H1 grease is completely non-toxic, odorless, and tasteless, making it safe for accidental contact with food.
🛠️ Step-by-Step 30-Minute Gearbox Repack
Lay down an old towel or trash bag before starting—old, separated mixer oil gets everywhere.
1.Remove the Outer Trim:2 mins.
Unplug the mixer. Remove the single screw at the back of the chrome top lid and slide the rear cap off. Unscrew the small side screws to pull off the decorative chrome “beauty band” wrapped around the head.
2.Pop Off the Planetary Head:5 mins.
Use a flathead screwdriver to gently pry and tap the metal drip ring off the rotating planetary head. Next, use a pin punch or small nail to hammer out the small solid dowel pin holding the planetary head to the central vertical shaft. Slide the head down and off.
3.Split the Housing Case Open:5 mins.
Remove the 4 large screws from the rear lower housing and the 5 screws exposed around the planetary ring underneath the head. Take note: One of the rear screws features a special lock washer—remember exactly which hole it came from. Carefully pry the heavy metal upper housing straight up and off the gear tower.
4.The Great Grease Purge:10 mins.
You will see a massive, messy pile of old amber or black sludge surrounding the metal and plastic gears. Use a plastic putty knife or a spoon to scoop out as much old grease as humanly possible. Wipe the gears down with a dry rag. (Do not submerge the upper housing in water, as it contains the electric motor!).
5.Pack the New Grease & Seal:8 mins.
Scrape off the old, paper housing gasket and press your new paper template gasket into place. Take your new NSF H1 Food-Grade Grease (approx. 4 to 6 ounces) and pack it generously into every tooth of the central worm gear and tower. Spin the gears by hand to distribute it. Drop the upper housing back down, tighten the screws in a cross pattern, and slide the planetary head back on.
🛒 Where to Source the $15 Generic Fix
You do not need to buy “KitchenAid” branded grease boxes.
- Search Term:
NSF H1 Food Grade Stand Mixer Grease and Gasket Kit - Generic Cross-Reference: Look for aftermarket kits containing Super Lube 41160 or generic synthetic H1 food-grade greases. These kits regularly retail on Amazon and eBay for under $15 and include the replacement paper gasket.
