Lubricating a treadmill may seem like a simple task: lift the belt, apply the oil, and run the machine for a few minutes. In practice, however, many treadmill problems are caused by incorrect maintenance. Sometimes users apply too little oil, sometimes too much, and sometimes they apply it in the wrong place.
The result? Your treadmill may start running louder, the belt may slip or jerk, and oily marks may appear around the machine. That is why it is worth knowing how to tell whether your treadmill needs more oil, what happens when you use too much, and which mistakes to avoid when lubricating the belt.
Proper treadmill lubrication is not about using a large amount of oil. With Prounol silicone treadmill oil, the recommended amount is approximately 3 ml on each side of the belt, or around 6 ml in total. This is usually enough to reduce friction under the belt without over-lubricating the treadmill.
Mistake 1: Using Too Much Oil
One of the most common mistakes is assuming that more oil means better lubrication. In reality, too much oil can have the opposite effect. The oil should create a thin lubricating layer between the treadmill belt and the running deck, not leak out from the sides of the machine.
If you use too much oil, it may spread to the edges of the belt, the treadmill frame, or the floor. In some cases, it may also reach the top surface of the belt — the part you walk or run on. This is especially undesirable because a greasy belt can become slippery and less safe during exercise.
Instead of lubricating the treadmill “just in case,” it is better to use a small, controlled amount of oil. With Prounol silicone treadmill oil, a practical guideline is around 3 ml on the left side of the belt and 3 ml on the right side.
Mistake 2: Applying Oil on Top of the Belt
Treadmill oil should be applied under the running belt, not on its top surface. This is important because lubrication is needed where the underside of the belt meets the treadmill deck. This is the area where friction occurs while the treadmill is in use.
Applying oil on top of the belt will not improve treadmill performance. Instead, it may make the surface slippery, uncomfortable to use, and harder to clean. If oil accidentally gets onto the top of the belt, wipe it off with a dry cloth before starting your workout.
The best method is to gently lift one side of the belt and insert the applicator underneath. Then apply the oil onto the treadmill deck, first on one side and then on the other.
Mistake 3: Lubricating the Treadmill Too Rarely
The opposite problem is lubricating the treadmill too rarely. If the treadmill is used regularly, the oil gradually spreads, wears away, and loses its effectiveness. Over time, the area under the belt may become dry, causing friction to increase.
For typical home use, it is a good idea to lubricate the treadmill every 30–60 hours of running time. If several people use the machine or if workouts are frequent and intense, it is better to check the belt more often.
Lubricating too rarely may cause the treadmill to run louder, the belt to jerk, and the machine to work under greater strain. It is best not to wait until the treadmill starts making obvious noise. Making this quick check part of your regular treadmill maintenance routine can help prevent unnecessary problems.
How Can You Tell If Your Treadmill Has Too Little Oil?
A dry belt often shows clear signs. One of the first symptoms may be louder operation. A treadmill that previously ran quietly and smoothly may suddenly start making more noise — squeaking, creaking, or sounding as if it is working harder than usual.
Another sign may be belt jerking. When walking or running, you may feel that the belt is not moving smoothly. Sometimes there is also a feeling of increased resistance, as if the treadmill needs more effort to keep moving.
Typical signs that your treadmill may need lubrication include:
- louder operation,
- squeaking or creaking under the belt,
- belt jerking during use,
- a feeling of increased resistance,
- a dry or matte surface under the belt,
- the treadmill deck heating up after a short period of use.
The simplest test can be done after unplugging the treadmill. Gently lift one side of the belt and touch the surface of the running deck underneath. It should feel slightly slippery. If it feels dry, rough, or draggy, the treadmill probably needs lubrication.
Can You Use Too Much Treadmill Oil?
Yes — and this is more common than many users think. Too much oil does not improve treadmill performance. Instead, it can cause mess, belt slipping, and an unpleasant feeling during exercise.
If you notice oil leaking out from the sides after lubrication, you have most likely used too much. Similarly, if the top of the belt feels greasy or slippery, wipe it thoroughly before using the treadmill again.
Excess oil may also attract dust, hair, and small debris. Over time, this can make the treadmill dirtier and may require more thorough cleaning.
That is why precise dosing is the best solution. Prounol silicone treadmill oil with an applicator allows you to apply the product in a controlled amount — from a small dose up to approximately 3 ml with one squeeze, depending on the pressure and length of the squeeze.
Mistake 4: Using the Wrong Product
To lubricate a treadmill, use silicone oil designed for this type of equipment. Do not use cooking oil, automotive grease, penetrating sprays, or general-purpose technical lubricants.
The wrong product may not provide proper lubrication, may leave residue on the belt, or may not be suitable for the materials used in your treadmill. In some cases, it may even make the machine work worse.
Silicone treadmill oil is designed to reduce friction between the running belt and the treadmill deck. That is why it is best to choose a product made specifically for this purpose rather than experimenting with unsuitable alternatives.
Mistake 5: Not Letting the Oil Spread After Application
After applying oil under the belt, it is a good idea to run the treadmill at a low speed for a few minutes. This helps distribute the oil evenly between the belt and the deck.
If you skip this step, the oil may remain in one spot instead of spreading across the working surface. After each application, turn the treadmill on without load, then walk on it for 2–3 minutes to help the oil spread more evenly.
This makes the lubrication more effective and helps ensure smoother treadmill operation.
Mistake 6: Ignoring the Manufacturer’s Instructions
Although the general lubrication principles are similar for many treadmills, it is always worth checking the manual for your specific model. Some machines may have their own recommendations for maintenance, lubricant type, or application frequency.
Pay particular attention if your treadmill has an automatic lubrication system. In that case, do not apply oil directly under the belt “by eye” unless the manufacturer recommends it. Instead, refill the reservoir or follow the maintenance instructions provided with the machine.
How to Check If Your Treadmill Is Properly Lubricated
A properly lubricated treadmill should run smoothly and without unusual noise. The belt should move evenly, without jerking or a feeling of excessive resistance.
After unplugging the machine, you can gently lift the belt and check the surface of the deck underneath. It should feel slightly slippery, but not wet with excess oil. If the surface is completely dry, it is worth applying lubricant. If oil is visibly leaking out or collecting near the edges, too much has probably been used.
The best result is a thin, even layer of oil under the belt — invisible from the outside, but noticeable in smoother treadmill operation.
How to Avoid Treadmill Lubrication Mistakes
The easiest way is to follow a few simple rules. First, use the right silicone oil for treadmills. Second, apply it under the belt, not on top of it. Third, use a small, controlled amount.
With Prounol silicone treadmill oil, the recommended amount is approximately 3 ml on each side of the belt, or around 6 ml in total. For typical home use, lubrication should be repeated every 30–60 hours of treadmill operation.
It is also worth observing how the machine works. Louder operation, squeaking, belt jerking, or a dry surface under the belt may indicate that your treadmill needs maintenance.
Conclusion: Too Little, Too Much, or Just Right?
The most common treadmill lubrication mistakes usually come down to two extremes: using too little oil or using too much. A dry belt may increase friction, make the treadmill louder, and cause the belt to jerk. Excess oil, on the other hand, may leak from the sides, make a mess, and cause the belt to become slippery.
The best solution is precise application. Around 3 ml of oil on each side of the belt is usually enough to reduce friction and support smoother treadmill operation. The oil should be applied under the belt, onto the treadmill deck, and after application the treadmill should be run at a low speed to help distribute the oil evenly.
Regular, proper maintenance does not have to be complicated. All you need is the right silicone oil, a precise applicator, and a few minutes of attention every few dozen hours of treadmill use.