If you’re like most car lift owners or automotive workshop managers I talk to, you probably don’t spend a lot of time thinking about the lubricants in your lift—until something goes wrong. Last month, a regular customer of mine called in a panic: his two-post lift had started making a high-pitched squeak every time he raised it, and when he checked, the chain was so dry it was showing rust spots. “I thought just any old oil would work,” he said, and that’s exactly the problem I see all the time. The truth is, car lifts aren’t like your average passenger car or truck, and the lubricants you use on them can make the difference between years of smooth, reliable operation and costly downtime, or even safety risks. As a car lift supplier with 12 years in the business, I’ve seen firsthand how cutting corners on lubrication leads to avoidable repairs and premature lift failure, so today I’m breaking down exactly what lubricants to use, what to skip, and how to keep your lift running like it should. Car Lift
First, let’s get one key point straight: car lifts have very different operating conditions than, say, a lawnmower or a passenger vehicle engine. Most in-ground and two-post lifts run on hydraulic systems, with moving parts including chains, cables, lift arms, and slide rails—all exposed to dirt, grease, road grime, and temperature swings in a workshop that’s often unheated or uncooled. That means the lubricant needs to do more than just reduce friction; it needs to resist water washout, stick to vertical surfaces (like slide rails) without running off, and handle heavy loads consistently, sometimes for hours on end. Using the wrong product can cause chains to snap, slide rails to seize, or hydraulic seals to leak, and that’s not just inconvenient—it can put your techs at risk when a lift malfunctions mid-service.
Let’s start with the most critical system in any car lift: the hydraulic system. This is the “muscle” that raises and lowers the lift, so choosing the right hydraulic fluid is non-negotiable. I get asked all the time, “Can I use generic hydraulic fluid from the auto parts store?” and my answer is almost always no, at least not without checking a few key specs. Car lift hydraulic systems operate at much higher pressures than, say, the hydraulic system in a lawn tractor—often between 1,500 and 3,000 PSI, depending on the lift model. That means the fluid needs to have a high viscosity index, which means it maintains its thickness (viscosity) across temperature changes. For most climates, that’s a ISO 32 or ISO 46 hydraulic fluid. The ISO number refers to the fluid’s viscosity at 40 degrees Celsius; ISO 32 is thinner, works well in colder environments, while ISO 46 is thicker, better for warmer workshops or lifts that run heavy loads daily.
But it’s not just about viscosity. Car lift hydraulic fluid needs to be anti-wear (AW) rated, because the pump, valves, and cylinder walls take a constant beating under load. AW additives form a protective film on metal parts that prevents metal-to-metal contact, even when the system is under maximum pressure. It also needs to be rust and oxidation resistant, because hydraulic systems can trap small amounts of moisture over time, especially if the lift is in a humid workshop. Over time, water in the fluid causes corrosion on internal components, and oxidation turns the fluid thick and sludgy, leading to clogged valves and pump failure. I always recommend brand-name AW hydraulic fluids that meet the specifications outlined by lift manufacturers, not generic off-brand products that cut corners on additives. For example, most major lift brands (including the ones I supply) recommend fluids that meet ISO 6743-4 and DIN 51524 standards—always check your lift’s owner manual first, because some newer models have specific fluid requirements for electronic control systems.
Next, the moving parts that aren’t part of the hydraulic system: chains, cables, slide rails, and pivot points. These are often overlooked, but they’re just as important as the hydraulic system when it comes to lift performance. Let’s start with slide rails, which are the vertical beams on two-post lifts (and many four-post lifts) that the upper carriages slide up and down on. These rails take the full weight of the vehicle, so they need a lubricant that can stick to the vertical surface without running off, resist dirt and grime, and provide long-lasting lubrication. A common mistake here is using lightweight grease or motor oil, which will quickly be washed away by workshop cleaning products or worn off by the constant movement of the carriage. The right product for slide rails is a heavy-duty, lithium complex or polyurea-based grease. Lithium complex grease is water-resistant and has a high dropping point, meaning it won’t break down even if the workshop gets hot, while polyurea grease has longer service life and better high-load performance. I recommend applying this grease to slide rails every three months for lifts that are used daily, and every six months for light-use lifts. Never use spray lubricants on slide rails—they’re too thin, and will attract dust and dirt, acting like sandpaper between the rail and carriage.
Chains and cables are another area where I see mistakes all the time. Some techs use regular motor oil on chains, which sounds like an easy fix, but motor oil is too thin and will sling off the chain during operation, leaving it exposed to rust. For lift chains, you need a lubricant that’s designed for high-load, slow-moving chains. That’s usually a extreme pressure (EP) gear oil, or a heavy-duty chain lubricant. EP gear oil has additives that handle the extreme pressure between chain links, preventing wear and stretch, which is a big deal because a stretched chain can cause lift alignment issues. For cables, I recommend a cable-specific lubricant that penetrates into the inner strands of the cable, not just coating the outer surface. Cables can fray from internal friction if they’re not lubricated properly, so a penetrating cable lube will extend their life significantly. For both chains and cables, avoid general-purpose spray lubricants—they don’t have the EP additives needed for lift loads, and they’ll attract debris that damages the parts. I suggest lubricating chains and cables every 50 operating hours, or every month for high-use lifts.
What about pivot points on lift arms? Those small pins that connect the lift arms to the carriage and the base of the lift. They need a grease that can handle high pressure and is resistant to water. A NLGI #2 lithium grease is perfect here—NLGI is the rating for grease consistency, with #2 being the standard for heavy-duty applications. Don’t use a grease that’s too thin (NLGI #0 or #1) because it will squeeze out under load, leaving the pivot unlubricated. Pivot points should be greased every six months, or whenever you notice squeaking when the lift is raised or lowered.
Now, let’s talk about what lubricants you should never use on a car lift. This is where a lot of people go wrong, so pay attention. First, never use generic motor oil or automatic transmission fluid (ATF) in the hydraulic system. ATF is designed for transmission components, not high-pressure hydraulic systems, and it doesn’t have the anti-wear or oxidation resistance that lift hydraulic fluid needs. I once had a customer who used ATF in his two-post lift, and within a year he had to replace the entire pump because the fluid oxidized and turned into a thick sludge that destroyed the pump’s internal components. That replacement cost him over $1,500—way more than buying the correct hydraulic fluid in the first place.
Next, never use silicone-based lubricants or dry lubricants on metal parts like slide rails or chains. Silicone lubes attract dirt and grime, creating a abrasive paste that wears down parts faster. Dry lubes (like Teflon sprays) are designed for low-load, dry environments, not for heavy automotive lifts that operate in dirty workshops. They’ll wear off in a matter of weeks, leaving your parts unprotected. Also, avoid multi-purpose lubricants that claim to work on everything from door hinges to chains to hydraulic systems—they almost always don’t have the specific additives your lift needs to operate safely.
Now, let’s get into best practices for lubrication, because even if you use the right product, if you apply it incorrectly, you’re wasting your time. First, always refer to your lift’s owner manual. I can give you general guidelines, but every lift model is different—some newer lifts have sealed hydraulic systems that don’t require fluid changes, while older models need a fluid flush every two to three years. The manual will also tell you the exact ISO viscosity for your hydraulic system and the correct grease for slide rails and pivots.
Second, clean the parts before lubricating. You don’t want to put fresh grease on a slide rail that’s covered in old dirt and grime— that will only grind the debris into the metal, causing more wear. Wipe down slide rails with a rag and a degreaser before applying new grease, and use a brush to clean old grease out of chain links before adding new chain lube.
Third, don’t over-lubricate. Too much grease on a slide rail will attract even more dirt, and excess grease on chains can sling onto the floor, creating a slip hazard and making a mess of your workshop. A thin, even coat is all you need for slide rails, and enough lube to coat every chain link without dripping is perfect for chains.
Finally, keep a lubrication schedule. Lift parts take a beating, so set calendar reminders to lubricate slide rails, chains, and pivots on the timeline we talked about, and check your hydraulic fluid level every six months. If you notice the lift is slower to raise, making unusual noises, or you see leaks around the hydraulic cylinder or fittings, don’t ignore it— that could be a sign of fluid degradation or a seal issue that needs to be addressed before it causes a breakdown.
As a car lift supplier, my number one priority is helping my customers keep their lifts safe and operational for as long as possible. I’ve seen too many workshops cut corners on lubrication and end up with lifts that are out of commission for days, costing them money and risking their techs’ safety. The good news is that using the right lubricants isn’t expensive— a five-gallon bucket of ISO 46 AW hydraulic fluid costs around $80, and a tub of heavy-duty grease is $20, both of which will last for months even in a busy workshop.
If you’re not sure what lubricants your specific lift model needs, or if you have questions about maintaining your lift, I’m here to help. We supply high-quality, manufacturer-recommended lubricants for all the lifts we sell, and our team can walk you through the right products and schedule for your workshop’s needs. Whether you need to order hydraulic fluid, grease, or chain lube, or you want to learn more about lift maintenance best practices, don’t hesitate to reach out to our team to discuss your requirements. We’re here to make sure your lift runs smoothly, safely, and reliably for years to come.
Electric Crane References:
- Automotive Lift Institute. (2020). Recommended Lubrication Practices for Automotive Lifts. Arlington, VA: Automotive Lift Institute.
- International Organization for Standardization. (2015). ISO 6743-4: Lubricants, Industrial Oils and Related Products (Class L) – Part 4: Family H (Hydraulic Systems). Geneva, Switzerland: ISO.
- National Lubricating Grease Institute. (2018). NLGI Grease Classification Guidelines for Heavy-Duty Industrial Equipment. Kansas City, MO: NLGI.
- Society of Automotive Engineers. (2021). SAE J306: Automotive Hydraulic Fluid Specifications. Warrendale, PA: SAE International.
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