

🛠️ Slick, visible, and built to perform—engine assembly’s secret weapon!
Permatex 81950 Ultra Slick Engine Assembly Lube is a high-viscosity, red-colored lubricant designed to protect engine components during initial start-up by preventing scuffing and galling. Meeting and exceeding OEM specifications, it ensures smooth assembly of bearings, camshafts, lifters, valves, and rocker shafts. With a heat-resistant flash point of 550°F and a compact 4 oz bottle, it offers professional-grade reliability and precision application for rebuilt or new engines.














| ASIN | B000HBNVSK |
| Best Sellers Rank | #3,623 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Assembly Lubricants |
| Brand Name | Permatex |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (9,792) |
| Flash Point | 550 Degrees Fahrenheit |
| 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 Milliliters |
| Manufacturer | Permatex |
| Material | Plastic |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Fleet and plant maintenance. |
| UPC | 686226819505 |
| Unit Count | 4.0 Fluid Ounces |
| Viscosity | High |
| Warranty Description | Warranty |
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.
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.
A**.
A Quality Lube!
Permatex is a well known name in the automotive industry. I needed some assembly lube for my distributor gear because of a swap. This was priced right, very easy to use. This is the right size bottle for my needs. This is a good quality lubricant.
N**S
Great product
This stuff stays exactly where you put it at. You don't have to worry about it running off of what you put it on.It has enough of stickyness to stay in place.
G**B
Great Assembly Lube
This works great for engine assembly! It's VERY tacky, even in hot weather. I have not had any issues using it.
A**R
Good product
Works great!
J**E
Great product
Works perfectly. Just as described.
T**N
Easy engine reassembly with this assembly lube
Certainly, using this product made my engine inspection much smoother. I applied it to the main bearings and caps while the engine was still in the truck, which simplified the process. After reinstalling everything and tightening the bolts, I started the engine and was happy to hear it run quietly and smoothly. It gave me a good sense of confidence during reassembly. I'm glad I decided to include it in my tune-up routine.
N**X
Lovely sticky slick engine lube. Great tack adherence. Pretty much the benchmark if building a fresh engine.
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
F**A
Ottimo lubrificante per montaggio di alberi motori,alberi a camme ecc
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