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🔧 Slick, red, and ready to rev your engine’s first impression!
Permatex 81950 Ultra Slick Engine Assembly Lube is a high-viscosity, red-colored lubricant designed to protect metal mating surfaces during initial engine start-up. Meeting OEM performance specs, it prevents scuffing and galling on critical components like bearings and camshafts, ensuring smooth assembly and long-term engine reliability.

| ASIN | B000HBNVSK |
| Best Sellers Rank | #3,610 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Assembly Lubricants |
| Brand | Permatex |
| Brand Name | Permatex |
| Compatible Material | Metal |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 10,049 Reviews |
| Flash Point | 550 °F |
| Global Trade Identification Number | 00686226819505 |
| Included Components | Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red |
| Item Form | Liquid |
| Item Type Name | Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red |
| Item Weight | 4.64 ounces |
| Liquid Volume | 130 ml |
| Manufacturer | Permatex |
| Material | Plastic |
| Model Number | 81950 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Information | Bottle |
| Part Number | 81950 |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 50 |
| Specific Uses For Product | Fleet and plant maintenance. |
| UPC | 686226819505 |
| Unit Count | 4 Fluid Ounces |
| Viscosity | High |
| Viscosity Level | High |
| Warranty Description | Warranty |
C**D
Practical lube for weekend car work
Planning some engine work on my old Civic, I grabbed this for my little home garage next to my desk in the office area. Texture is thick so it sticks right on the cam lobes and bearings. During a late Saturday install, it stayed put even when i kept rotating the crank. Im glad I had it.
J**F
Handy little tube for engine work
Actually grabbed this for my dorm bc my roommate and i are rebuilding an old motorcycle engine in the parking lot behind our building. Ultra slick is a good name for it. This stuff clings hard to the parts so I’m not stressing while we spin the crank and check clearances. I can see it staying put on cam lobes and bearings, even when we keep stopping to look things up on YouTube. The red color helps a ton when I’m tired and double checking what I hit and what I missed. Tube is small but goes a long way, and it doesn’t make a giant mess on our tiny workbench. Made me weirdly glad we didn’t cheap out.
B**E
Fantastic stuff!
Awesome product! Performs better than advertised. A must have when assembling any engine!
K**Y
Useful engine assembly lube
I've been using the Permatex 81950 for a while now and really like how smoothly my engine parts go together. it's handy to keep on hand during rebuilds. the red color makes it easy to see where I've applied it. definitely a good addition for anyone working on engine projects. it helps parts turn easily without any hassle. happy with the quality and how it performs during assembly.
G**N
Quality stuff
Works very well. Good product
I**G
Good for weekend driveway projects
Garage pick up for me and my teenage son rebuilding the old Civic engine. This stuff is thick and stays where i put it on bearings and cam lobes. Motor spun free on first start. Only gripe, the bottle is small so if you’re doing a full build just grab two.
T**D
Assembly lube
This is a good quality product it has more uses than just assembley
L**E
Fine for weekend engine tinkering
First got this as a gift from my son, who knows i still like to tinker with old lawn mower engines in the garage. The texture feels thick and it clings nicely to bearings and cam lobes, so parts stay coated while I take my time. The bottle is a bit stiff though, so squeezing out the last third takes some annoying effort with my older hands. Still, it worked reallly well on the small Briggs engine we rebuilt together last month.
N**X
Standard issue
Lovely sticky slick engine lube. Great tack adherence. Pretty much the benchmark if building a fresh engine.
S**S
Très bon produit
Le produit lui même me semble parfait pour remonter un moteur. L'huile adhère très bien aux surfaces, pas besoin d'en mettre des tonnes. On peut faire plusieurs moteurs sans problème. Le produit est visible une fois en place, on sait si on l'a mis ou pas. Le seul reproche c'est le bouchon verseur qui pourrait être plus pratique, là on a un système qui évite d'avoir un bouchon qui se balade mais c'est pas des plus pratique pour étaler du produit précisement.
T**.
Sehr schmierige Angelegenheit - Ironie
Top Ware, gerne auch beim nächsten Getriebe- oder Motor-Zusammenbau.
F**A
Consiglio
Ottimo lubrificante per montaggio di alberi motori,alberi a camme ecc
M**.
worth it
worth it
Trustpilot
3 days ago
5 days ago