







⚙️ Slick start, smooth ride — don’t let your engine miss the mark!
Permatex 81950 Ultra Slick Red Engine Assembly Lube is a high-viscosity, OEM-spec lubricant designed to protect metal surfaces from scuffing and galling during the critical initial start-up of new or rebuilt engines. Trusted by professionals, it ensures superior adhesion and long-lasting lubrication, extending engine life and performance.














| ASIN | B000HBNVSK |
| Best Sellers Rank | 6,595 in Automotive ( See Top 100 in Automotive ) 127 in Car Engine Oils |
| Brand | Permatex |
| Customer Reviews | 4.8 4.8 out of 5 stars (9,477) |
| Date First Available | 14 Mar. 2013 |
| Exterior | Factory |
| Item Weight | 132 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; 131.54 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.
J**L
A1
Spot on
A**R
Great product
Great product,fast shipping
R**2
happy with item
good product
N**S
lube
did the job
D**N
Good stuff
Removed my camshaft to replace rockers and lifters used some of this when reassembling the cam, good quality stuff
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
H**Y
今まで指やハケで塗る他メーカー製を使っていましたが、そのまま滴らせるこれが欲しく購入。粘度が高くクリアランスの狭い所には向かなくかなり回転が渋くなります。使う場所によって使い分けしたいと思います
M**.
worth it
Trustpilot
1 month ago
1 month ago