Lube substitutes in a pinch: what's in your house that actually works

It’s 9 PM on a Sunday, the drawer won’t slide, the zipper on your jacket is stuck, or the bedroom door is squeaking loud enough to wake the kids — and you don’t have the right lubricant for any of it. You could run out to the hardware store in the morning. Or you could reach into the bathroom cabinet, kitchen drawer, or toolbox and find something that’ll hold you over for the next week. This guide is the honest reference for exactly that: what works, what doesn’t, and how long the improvised fix will actually last before you need the real thing.

The Reference Table

Rows are things you might need to lubricate. Pick the first green substitute on the row that matches something you own. The rightmost column is the permanent fix — which you should get around to eventually.

The Three Heroes of the Household Toolkit

1. Candle Wax / Paraffin Block

If you could only own one improvised lubricant, it would be a plain unscented candle or a paraffin block from the canning section of the grocery store. Rub it on wood drawer runners, window tracks, zipper teeth, wood screw threads, saw blade teeth, and the bottoms of skate decks. It’s dry, doesn’t stain, doesn’t attract dust, and lasts months. Every serious woodworker has a chunk of paraffin within reach. The specialty products that compete with it (Bostik GlideCote, Sandaraic wax sticks) are basically the same wax with a handle.

2. Petroleum Jelly (Vaseline)

A mineral-oil-based semi-solid that clings where you put it. Excellent on metal-on-metal pivots that need something more than oil but where a grease tub is overkill — door hinges, lock mechanisms (externally, not inside the cylinder), cabinet hinges. Petroleum jelly is not food-safe, attracts dust in open environments, and will swell natural rubber. But on an indoor hinge it’s great for 6+ months.

3. Graphite (From a Soft Pencil)

The side of a #2 or softer pencil rubbed onto a key, a lock latch, or a stuck zipper deposits powdered graphite — a real dry lubricant used in aerospace and industrial applications. Shake the key in the lock a few times after rubbing the graphite on and the friction drops measurably. The difference between this hack and the real thing (a squeeze tube of powdered graphite for $4) is quantity, not chemistry.

The Things People Reach For That You Should Not Use

• WD-40 (the blue-and-yellow can): It’s a water displacer and light cleaner, not a lubricant. It’ll feel like it worked for two hours, then leave the part drier than before. WD-40 has its own product line of actual lubricants (White Lithium, PTFE, Dry Lube, Silicone) — those are fine. Just not the classic formula.
• Cooking oil (olive, vegetable, canola): Goes rancid, polymerizes, turns gummy. Do not use on anything you expect to still work in 6 months.
• Butter, margarine, lard, bacon grease: Same problem as cooking oil, with added stink.
• Hair conditioner: People recommend this for bike chains online. Please don’t. It’s a water-based emulsion; the water rusts the chain.
• Hand sanitizer: Alcohol will strip whatever lube is there and evaporate. Makes things worse.
• Dish soap / body wash: Water content = rust. Residue attracts more grit than it prevents.

The Firearms Exception — Motor Oil Actually Works

There’s a long-running myth that you’ll destroy your gun by running it on motor oil. You won’t — at least not in any measurable way for several hundred rounds. Motor oil is a high-quality lubricant engineered for metal-on-metal contact under far more extreme conditions than what a Glock slide experiences. Soldiers in WWII and Vietnam routinely lubricated rifles with whatever oil was in the motor pool.

The reason you shouldn’t use it long-term is that motor oil is designed to carry combustion byproducts — soot, metal shavings, acids — into a filter. Your gun has no filter. Over many thousands of rounds, that carbon builds up faster than with purpose-built gun oil. But for a weekend range trip or a truck-gun emergency? It works. Same goes for ATF (automatic transmission fluid) — if anything, it works better than motor oil because of the detergent package.

For the long-term story, the Glock lubrication guide covers what actually belongs on the slide rails.

Common Questions

Is WD-40 a lubricant or not?

It’s a mild penetrant and water displacer with some short-term lubricating properties. The WD in the name stands for “Water Displacement,” and the 40 was the 40th attempt at the formula. If you spray it on a hinge it’ll quiet the squeak — for a few hours. Then it evaporates and the hinge is worse than before. The related specialty products (WD-40 Silicone, Lithium, PTFE) are fine lubricants; the classic can isn’t.

Can I mix household items to make a better substitute?

The classic is 50/50 ATF and acetone as a penetrating oil for stuck bolts. It genuinely works — independent machinist-shop tests rank it competitive with Kroil. That’s the only DIY mix worth bothering with. Mixing cooking oils with wax or petroleum jelly just gives you a messier, rancid version of each.

I heard you can lube a bike chain with olive oil. Can I?

Technically yes, for one ride. It’ll rust the chain in days and turn sticky within a week. Use it only if you’re truly stranded and need to get home. Then clean the chain thoroughly and apply real chain lube.

What about in extreme cold? Does any household item work?

Powdered graphite and candle wax both work well below freezing — they’re solid at room temperature and don’t thicken further. Petroleum jelly stiffens noticeably below 20°F and becomes nearly unusable below 0°F. Synthetic gun oils and specialty products far outperform any household substitute in real winter conditions.

Is silicone spray household or specialty?

It’s usually sold in the household aisle (Home Depot, Lowe’s) but it’s a real lubricant — not a substitute. A $6 can of silicone spray is arguably the single best general-purpose lubricant you can keep in a garage, good on rubber, plastic, metal, and fabric without staining or attracting grit. If you’re shopping for a true “one can does most things” option, silicone spray beats WD-40 by a wide margin.

Quick Reference

• Keep on hand always: plain candle, small jar of petroleum jelly, a #2 pencil, can of silicone spray.
• Firearms emergency: 5W-30 motor oil — one drop per rail, works for a few hundred rounds.
• Stuck bolt: 50/50 ATF + acetone, let it soak 15 minutes before turning.
• Wood drawer: rub the candle on the runner. Lasts 1–2 years.
• Door hinge: Vaseline on the pin with a toothpick. Lasts months.
• Lock: rub a soft pencil on the key, insert, work the key a few times.
• Do NOT substitute for: 3D printer screws, sewing machines (long-term), food-contact surfaces, anything with nylon/polycarbonate (oils can crack plastic).

For specific-part recommendations across every maintenance task — not just the improvised ones — see the full lubricant guide, filterable by food safety, temperature range, and material compatibility.