Lubicrants

People usually think of WD-40 as as an oil. WD-40 => Water Displacer #40. Is primarily a solvent-based product with just the smallest amount of oil in it.

WD-40 is kerosene
Also don't use this as a rust inhibitor, it may displace water, but it is really actually hygroscopic and will attract moisture to whatever you've sprayed to "protect" and it will quickly rust.

Lightweight machine oils (e.g.3 in one) are considerably lighter than even 5W30, the lightest of the standard automotive oils

tri-flow-vs-wd-40 | BobisTheOilGguy.com

LPS #2

I use the CLP and Triflow less now except to clean and oil hand tools, as I've been using Mobil 1 75W90 for everything except for three items; I still use Lockease on locks, Eezox on my pocket knives, and Eezox and CLP on firearms. The Mobil 1 doesn't seem too thick as it works well on my older (I think I bought it in the 70s) plain bearing Dremel, but I wouldn't use it on locks. It works a LOT better than CLP or Triflow as a lube. I buy WD40 by the gallon as I use it for cleaning and short term protection on most large tools in the garage, including the mower top to bottom, but I don't use it as a lube.

Which-lubricant-to-use | DIY Life
Silicone spray (Triflow, WD-40 silicone) is increasing in popularity as it works well as a sliding lubricant for metal, wood, rubber and plastic. Silicone spray also repels water and is therefore often used to push water out of electrical components.

Synthetic grease has better lubrication properties than petroleum based grease and has a longer life as it resists thermal breakdown and shear.

Marine grease is similar to synthetic grease however it is water resistant and contains a rust inhibiter to prevent metal parts from fusing together due to rust build up. Marine grease is the best choice for items which are continuously submerged in water or exposed to the elements.

Best-spray-lubricant | LA Times
Slick 50 Spray Lubricant - Best Spray Lubricant Overall
3M Silicone Spray Lubricant - Runner Up (dry type)

Others:

Syncolon® (PTFE) ...
PTFE - Polytetrafluoroethylene, which is a synthetic fluoropolymer. Water and water-containing substances do not wet PTFE; therefore, adhesion to PTFE surfaces is inhibited. It is very non-reactive, and so is often used in containers and pipework for reactive and corrosive chemicals. When used as a lubricant, PTFE can reduce friction, wear, and energy consumption of machinery.
3-in-one oil - SAE Grade: 17
Tri-Flow - Designed for use as a combination penetrating oil and lubricant. Additives have been included in the formulation to help it to act as a solvent for dirt and contaminants. It also displaces any existing moisture, protecting metal parts from oxidation.
A lubricant that does not attract dust.
Sewing Machine oil - 3-in-1 oil is not suitable for sewing machines. It evaporates over time, leaving a gummy residue that clogs moving parts.
Top 8 Sewing Machine Oils
Slick 50 One Lube - The Teflon and other additives ensure that lubrication and protection are still provided to bearing surfaces, even after the oil itself dries up.
It's a little thicker than other spray oils but still works as a penetrating oil when you need to break loose corroded or frozen parts.
CRC Garage Door Lube - A PTFE and silicone fortified lubricant that prevents friction, wear and corrosion, and drives out moisture.
CLP - "Clean, Lubricate and Protect." - Gun oil

Penetrating oil
Kroil vs PB-Blaster
A study done by Machinist's Workshop magazine in their April 2007 issue looked at different penetrating oils to see which one did the best job of removing a rusted bolt by measuring the pounds of torque required to loosen the bolt once treated. If the study was scientifically accurate, it turns out a home brew works best! Here's the summary of the test results:

 Penetrating oil ..... Average load
 None ....................516 pounds
WD-40 ................... 238 pounds
PB Blaster .............. 214 pounds
Liquid Wrench ........... 127 pounds
Kano Kroil .............. 106 pounds
ATF-Acetone mix............53 pounds
ATF - Automatic Transmission Fluid

Beyond-wd-40-lubes-for-the-home-shop | HackaDay
In 2012, a group of engineering students from Drexel University studied alternatives to commercial penetrating oils, which are often expensive or hard to come by in developing countries. In a controlled series of experiments, they determined that a simple mixture of vegetable oil and acetone was far superior to WD-40 in reducing the breakout torque of nuts rusted onto bolts. Similar comparisons show that a 50-50 mix of automatic transmission fluid (ATF) and acetone beats the commercial penetrating oils at a fraction of the cost.

ISO Grade	Equivalent SAE Grade	Viscosity				Density
		centiStokes		10^-6 Reyns (lb s/in²)		kg/m³	lb/in³
		40^oC	100^oC	104^oF	212^oF	kg/m³	lb/in³
32	10W	32	5.4	4	0.6	857	0.0310
46	20	46	6.8	5.7	0.8	861	0.0311
68	20W	68	8.7	8.5	1.1	865	0.0313
100	30	100	11.4	12.6	1.4	869	0.0314
150	40	150	15	19	1.8	872	0.0315
220	50	220	19.4	27.7	2.4	875	0.0316

I could not find any web site which listed SAE grades for common oils tri-flow, WD-40, ...

ISO Grade Oils - Viscosities and Densities. Available at: EngineeringToolBox.com

Terms:

PTFE - Polytetrafluoroethylene, which is a synthetic fluoropolymer.
SAE -  Society of Automotive Engineers,

last updated 1 Nov 2022