







⚙️ Slick Start, Smooth Ride — Engineered for the driven professional
Permatex 81950 Ultra Slick Red Engine Assembly Lube is a high-viscosity lubricant designed to protect metal mating surfaces during the critical first start of new or rebuilt engines. Its premium formula adheres firmly to components, preventing scuffing and galling, while meeting or exceeding OEM performance standards. Trusted by thousands of automotive professionals, it ensures reliable, long-lasting engine performance from day one.














| ASIN | B000HBNVSK |
| Best Sellers Rank | 5,333 in Automotive ( See Top 100 in Automotive ) 108 in Car Engine Oils |
| Brand | Permatex |
| Customer Reviews | 4.8 4.8 out of 5 stars (9,428) |
| Date First Available | 14 Mar. 2013 |
| Exterior | Factory |
| Item Weight | 113 g |
| Item model number | 81950 |
| Manufacturer | Permatex Products |
| Manufacturer part number | 81950 |
| Model | Ultra Slick Engine Assembly Lube - 4oz. |
| OEM Part Number | 81950 |
| Product Dimensions | 3.96 x 12.85 x 3.96 cm; 113.4 g |
| Viscosity | High |
N**X
Standard issue
Lovely sticky slick engine lube. Great tack adherence. Pretty much the benchmark if building a fresh engine.
A**H
Very good product
Good quality
M**M
Perfect helped make my new engine installation go smoothly
Brought this to use with my new engine on my car, i'm not a professional mechanic but this stuff is very sticky, over the course of a few weeks I built up my new engine and once applied this stuff stays in the area you left it. Fast forward the engine is in and running, no issues and after the first oil change there is no signs this stuff was ever in the engine which is what you want.
A**R
Great product
Great product,fast shipping
R**2
happy with item
good product
N**S
lube
did the job
J**S
Stays where you put it.
This stuff is really good for engine and timing chair assembly. It's sort of sticky and stays in place. Gives the moving parts a chance on first startup before the lubricating oil gets pumped round fully.
S**R
Great price
Great price good quality just right
S**S
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.
X**C
Necesario para montajes de motores nuevos
K**H
Great product
M**.
worth it
A**K
Probably the best Assembly\prelube available protects for storage and initial start up.
Trustpilot
1 week ago
2 weeks ago