Here's everything you need to know about automotive, household and shop lubricants like white lithium grease.
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Here's everything you need to know about automotive, household and shop lubricants like white lithium grease.
Our editors and experts handpick every product we feature. We may earn a commission from your purchases.Learn more.
This is a “dry” lubricant, but it actually goes on wet. Once the solvent dries, the product leaves a thin film of dry polytetrafluoroethylene (PTFE)-the same product used to make nonstick frying pans. The main advantage of dry PTFE is that dust doesn’t stick to it. That makes it a great lube for dirty environments like your garage or shop.
PTFE bonds to metal, wood, rubber and plastic. It’s a light-load lubricant, so it’s not the best lube for equipment that carries a heavy load or transmits high torque. And it doesn’t have any anticorrosive properties (although some manufacturers spike theirs with an antirust additive), so don’t use it on outdoor metal.
Dry PTFE lube is available in both aerosols and squeeze bottles. Check the label to make sure the solvent won’t harm the material you’re lubricating.
Note: Not all “dry” lubes are PTFE. Some are silicone, which is a different ball game.
Synthetic grease is the best choice for gears, axles and bearings that carry heavy loads, transmit high torque, operate at high temperatures or are subject to shear stress. Synthetic grease has less rolling friction than the petroleum-based grease you’ll see next to it on store shelves. It resists thermal breakdown and shear, too, so it lasts much longer than other types of grease.
Silicone is the slipperiest of all lubricants, so it’s a great choice for items that slide against one another. Silicone repels water, but not water vapor, so you can use it to dry out electrical connectors. But don’t rely on it as a sealant in humid conditions.
Use silicone to lubricate metal, wood, rubber and plastic. However, dust and dirt stick to silicone, so use it sparingly or use a “dry” version in dirty environments.
The biggest downside to silicone spray lubricant is that once you apply it to an object, you can never paint or stain it. And, since the spray drifts, it can contaminate nearby walls and floors. If you ever plan to paint anything in the surrounding area, mask off the spray zone before you spray.
Marine grease keeps metal parts moving and prevents them from rusting together into single globs of corroded metal. Like lithium grease spray, marine grease is formulated to lubricate high-load items. But it’s thicker and far more water resistant than lithium grease, so it does a fantastic job of inhibiting rust and preventing metal parts from “welding” themselves together with rust.
Use marine grease to lubricate items that are directly immersed in water or constantly exposed to the elements. Like any grease, it’s a tacky magnet for dust and dirt.
Other products will free up stubborn nuts and bolts—eventually. But they won’t do it nearly as fast or as well as oil formulated just for that job. Rust-penetrating oil contains an aggressive solvent to penetrate the rust. And it contains a special low-viscosity, low-surface-tension lubricating oil that flows into micro-cracks in the rust to get lube deep into the threads. But don’t use it for purposes other than stuck stuff; it does a poor job of keeping things slippery.
Grease is the lube of choice for higher-load items like bearings and axles because it cushions parts. And unlike oil, which tends to seep away, grease stays in place and lasts much longer. White lithium grease spray is a great all-around grease for lubricating light- to medium-load items like tools and garden equipment.
White lithium grease comes in aerosol spray cans and in tubes. White lithium grease spray is easier to use because the solvent helps the grease seep into tight spaces. That can save you the trouble of disassembling components to grease them.
Chain lube penetrates deep into roller chain links and doesn’t fly off when the chain is in motion. To use it, clean off the old lube with spray solvent and a brush. Apply the chain lube and slowly rotate the chain to allow it to work into the links. Then leave it alone until the solvent evaporates.
Chain lube resists water, dust and dirt better than ordinary oil. Use it for chains on bicycles, motorcycles, scooters, garage door openers and outdoor power equipment. But never use aerosol chain lube in place of a bar chain oil on chain saws.
Garage door hardware operates in an environment that’s often dirty and damp, sometimes hot and sometimes cold. That’s why there’s a special garage door lubricant for it. Garage door lubricants are formulated to penetrate deep into hinges, rollers and springs but dry to a fairly tack-free finish to resist dust and dirt buildup. Many garage door lubricant brands also contain anticorrosive additives to protect against rust.