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NTP Permatex 81950 Ultra Slick Eng Assy Lube P12993944NTP-P1381950 https://cdnimages.opentip.com/full/NTP/NTP-P1381950.jpg Permatex 81950 Ultra Slick Eng Assy Lube Manufacturer Part Number: 81950Assembly Lube; Ultra Slick ™; 4 Ounce BottleProduct InfoProper lubrication of metal mating surfaces is essential prior to starting a new or rebuilt engine. Ultra Slick™ adheres to component surfaces to prevent scuffing and galling during initial start-up. This high quality formulation meets or exceeds OEM performance specs for engine assembly lubricants.Unit Size: 4 OunceUnit Type: BottleFeatures Excellent Adhesion To Metal Surfaces; Will Not Drain Off During Assembly Extreme Pressure Agents That Work In Unison For Superior Wear-In Protection Needed Prior And During Initial Engine Start Up Treated With Special Rust And High Temperature Oxidation Inhibitors Exceeds All OEM Specifications As An Engine And Bearing Assembly Lubricant No Supplier Warranty Product SizeProduct Height(inch): 1.56Product Length(inch): 5.06Product Width(inch): 1.56Product Weight(lbs): 0.5 12993944 686226819505 0.6000lbs 0.00 0.00 0.00
Permatex
6.5900 2027-01-05 24 In Stock
customer review - by , December 12, 2025
5/ 5stars
Holds together loose parts until they're secured and lubes stuff up at first start when there's no oil around. Pretty happy with all Permatex stuff I've bought and this fits right in that boat with their Loctite and silicone gasket maker.
customer review - by , December 12, 2025
5/ 5stars
Not being a professional engine builder myself I wasn't sure how much I needed. To so much is the fact is I thought I had gotten too small of an amount will lo and behold this is the perfect amount perfect Price and it has like a red dye to it and very easy to see and this stuff is sticky you can put it anywhere it won't drip on your face LOL and it is like as hell very very impressed with this product and very happy I would buy it again and recommend it
customer review - by , December 12, 2025
5/ 5stars
The Slickest. Great stuff...used on M156 AMG
customer review - by , December 12, 2025
5/ 5stars
Great engine assembly lube
customer review - by , November 11, 2025
5/ 5stars
Good stuff.
customer review - by , October 10, 2025
5/ 5stars
I use Permatex Ultra Slick on every application of the forcing-screw of my OTC (6575) Hub Grappler, its high viscosity (retention) holding wear of the tool to a minimum.
customer review - by , October 10, 2025
5/ 5stars
This is a good product for one working on engines. It is very sticky and tacky and high viscosity. The price is good and the brand is well known.
customer review - by , October 10, 2025
5/ 5stars
Perfect for what I needed
customer review - by , September 9, 2025
5/ 5stars
This product is very stringy, so make sure you plan to get some of it on you. Works great, and allows parts to glide together with ease while pressing together. Keeps moving parts adequately lubricated while waiting for oil to circulate entire engine. Usually I would hear a few seconds if whining or chatter after engine assembly at first start up, but with this product I heard none of that. Acted as if it already had oil resting inside the engine, and ran with the sound of the exhaust being the only thing heard. Highly recommend using this on your next engine build project.
customer review - by , August 8, 2025
5/ 5stars
Have the same size and exact bottle of it -from 40 years ago . Used some from this old bottle this past spring when rebuilding my Honda odyssey engine .worked great on initial startup ..as expected .

Permatex 81950 Ultra Slick Eng Assy Lube

stars Rating 5 | 224 reviews
Brand Permatex
Shop more from NTP

UPC: 686226819505
SKU: NTP-P1381950
Price: $6.59
Quantity:
24 In Stock
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Product Description

Manufacturer Part Number: 81950

Assembly Lube; Ultra Slick ™; 4 Ounce Bottle

Product Info
Proper lubrication of metal mating surfaces is essential prior to starting a new or rebuilt engine. Ultra Slick™ adheres to component surfaces to prevent scuffing and galling during initial start-up. This high quality formulation meets or exceeds OEM performance specs for engine assembly lubricants.

Unit Size: 4 Ounce

Unit Type: Bottle

Features
  • Excellent Adhesion To Metal Surfaces; Will Not Drain Off During Assembly
  • Extreme Pressure Agents That Work In Unison For Superior Wear-In Protection Needed Prior And During Initial Engine Start Up
  • Treated With Special Rust And High Temperature Oxidation Inhibitors
  • Exceeds All OEM Specifications As An Engine And Bearing Assembly Lubricant
  • No Supplier Warranty


Product Size
Product Height(inch): 1.56
Product Length(inch): 5.06
Product Width(inch): 1.56
Product Weight(lbs): 0.5

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Shipping Restrictions

This product can only be shipped to United States.

Return Policy

This item is non-returnable.

Note

This product is not eligible for coupon code discount, for we've been offering the best price in the market.
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Customer Reviews
By Nice amp; Clear
Date: December 14, 2025
Holds together loose parts until they're secured and lubes stuff up at first start when there's no oil around. Pretty happy with all Permatex stuff I've bought and this fits right in that boat with their Loctite and silicone gasket maker.
Rating: 5 stars [5 of 5 Stars!]
By Awesome for the cost, easy peasy to use.
Date: December 10, 2025
Not being a professional engine builder myself I wasn't sure how much I needed. To so much is the fact is I thought I had gotten too small of an amount will lo and behold this is the perfect amount perfect Price and it has like a red dye to it and very easy to see and this stuff is sticky you can put it anywhere it won't drip on your face LOL and it is like as hell very very impressed with this product and very happy I would buy it again and recommend it
Rating: 5 stars [5 of 5 Stars!]
By Zephyr
Date: December 07, 2025
The Slickest. Great stuff...used on M156 AMG
Rating: 5 stars [5 of 5 Stars!]
By Brad
Date: December 01, 2025
Great engine assembly lube
Rating: 5 stars [5 of 5 Stars!]
By Robert P
Date: November 03, 2025
Good stuff.
Rating: 5 stars [5 of 5 Stars!]
By DHempstead
Date: October 31, 2025
I use Permatex Ultra Slick on every application of the forcing-screw of my OTC (6575) Hub Grappler, its high viscosity (retention) holding wear of the tool to a minimum.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 216 reviews
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