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🚀 Slick Start, Smooth Ride: Engine assembly’s secret weapon!
Permatex 81950 Ultra Slick Engine Assembly Lube is a high-viscosity, red-tinted lubricant designed to protect metal surfaces during engine assembly and initial start-up. With a flash point of 550°F and OEM-spec formulation, it prevents scuffing and galling on critical components like bearings and camshafts, ensuring a flawless engine break-in. Trusted by professionals and rated 4.8 stars from nearly 10,000 users, it’s the go-to solution for reliable, precision lubrication in automotive rebuilds.

| ASIN | B000HBNVSK |
| Best Sellers Rank | #3,011 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Assembly Lubricants |
| Brand | Permatex |
| Brand Name | Permatex |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 9,989 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 |
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
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.
K**S
High-Performance Engine Lube for Smooth Assembly
I was initially surprised by the size of the 4 oz. bottle, but don't let that fool you - a little of this engine lube goes a long way. As I appkied it, I was impressed by how effortlessly it coated the engine parts, promoting a perfect fit with each piece. This high-quality lube pplayed a crucial role in reducing friction during assembly, simplifying the entire process. Additionally, the vibrant red color not only adds a fun touch but also serves a practical purpose by clearly indicating where it has been applied, preventing any areas from being overlooked.
E**S
Handy little tube for engine builds
Fresh tube of this lives in the top drawer by my register because customers ask for it when theyre rebuilding small block engines in their garages. I bought it for my own mower and shop compressor tear downs. The nozzle makes it easy to run a thin bead on cam lobes and bearings without dripping everywhere. I like that the red color lets me see exactly where I put it when im working under bad shop lighting. Used it during a Saturday rush on a customers leaky old tractor engine and it stayed put while we buttoned everything up. Good stuff for slow first startups after a rebuild.
V**E
Great lube
Great engine assembly lube its all ive ever used
J**E
Thick lube that really stays put
This little tube ended up in my cart after i watched a YouTube guy rebuild an engine and realized my husband was about to do the same thing on our old pickup. He’s good with tools but not big on reading labels, so I grabbed this for him. The texture is thick and sticky, so it actually clings while parts sit on the workbench and while he rotates things into place. He said the red color makes it easy to see where he already hit. I was glad when the engine fired up smooth on the first try, no weird noises, just that steady rumble in the driveway. For something so small, it made me feel a lot better about the whole project bc that truck is how he takes our oldest to practice.
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
2 months ago
1 month ago