Finding budget solutions for car maintenance is a perpetual dilemma for many used car owners. Automotive forums and garage conversations are the subject of lubricants from places other than specialty stores. traffic-light oilThis is a myth that some drivers perceive as a way to save money, while others perceive as a dangerous myth.
In this article, we will discuss in detail what really lies behind this strange name, why viscosity 10w 40 And it's the most common thing to be involved in these discussions, and whether to trust the feedback from people who have already taken the risk of putting it in their engine, and we'll analyze the chemical composition of these liquids, if known, and compare them to certified analogues.
It is important to note at once that the fuel and fuel market is oversaturated with counterfeit, and any product sold outside official outlets carries enormous risks. Statistics show that up to 60% of oils sold on roadsides and in stalls without a license are either a working out or a dangerous mixture of industrial oils with diesel fuel. Therefore, before reading reviews and drawing conclusions, you need to understand the nature of the origin of this product.
What's behind the name "oil from traffic lights"
The term "traffic light oil" is not an official technical name or brand, and is most commonly used in professional settings and among experienced mechanics. counterfeitThe name may have been derived from the fact that these points are often located near traffic lights on busy intersections where drivers are stuck in traffic jams and can make an impulsive purchase.
Another version says that the color of the canister or label vaguely resembles the color of a traffic light, or it is a slang name for extremely low-quality oils that “burn” in the engine as brightly as traffic control signals. However, based on real reviews of 10w 40 oil sold in such places, we are talking about products without labeling or with fake logos of famous brands.
Buying these materials is always a lottery, and you never know what's inside the canister: a waste product that's been cleaned by handicrafts, or a cheap industrial oil that's been dyed. Viscosity 10w 40 It is not chosen by fraudsters by chance, since this is the most popular all-season characteristic for used cars, and the demand for it is stable all year round.
Analysis of the viscosity of 10w 40 in the context of budget oils
When it comes to oil 10w 40We are talking about an all-season product that retains fluidity at low temperatures (up to -25 ° C) and provides sufficient oil film density when heated to 100 ° C. In original products from well-known manufacturers (Shell, Mobil, Lukoil), these parameters are achieved due to a complex additive package and a high-quality base base.
In the case of traffic light oil, the claimed viscosity is often a fiction. Real-world measurements show that at low temperatures, such a liquid can turn into a gel that cannot be pumped, leading to oil starvation of the engine when it starts cold, and in the summer, when it is heated, it can become too liquid as water, losing its oily power. lubricating.
The testimonials of drivers who have done lab tests on a 10w 40 often indicate a high evaporation index, which means that the oil burns with the fuel, leaving lacquer deposits and soot on the cylinder walls and piston, the engine starts eating liters of oil for a thousand kilometers, and blue smoke pours out of the exhaust pipe.
How to distinguish a fake by appearance?
Notice the quality of the canister plastic -- the original one is smooth, without stitches or burrs. The label should be flat, without bubbles. The lid should have a protective ring that breaks when it first opens. If the oil is too transparent or has a cloudy residue, that's a cause for concern.
Real feedback from owners and the consequences of using
In the forums and communities of motorists, there are many stories about the consequences of using questionable oils. Most of the reviews are negative, describing situations where saving several hundred rubles led to major engine repairs. Drivers note the appearance of hydraulic compressors, noise in the chain or belt drive of the GRM.
Especially often complain owners of old foreign cars and domestic cars, which are most susceptible to the quality of lubrication. Oil channel clogging The thick stain from burning poor-quality oil settles in narrow channels, blocking the lubricant’s access to critical nodes such as camshafts and a turbine (if any).
Here are the main complaints that occur in reviews:
- 📉 A sharp drop in oil pressure on hot, which is signaled by a light bulb on the dashboard.
- 🔥 Overheating of the engine due to loss of heat dissipating properties of the liquid.
- 💨 The appearance of a panic and the need for constant addition between replacements.
- 🔧 Failure of the catalyst and lambda probes due to toxic combustion products of additives.
Some users say that "this is good for an old car," but mechanics strongly disagree with this approach. Even in a high-mileage engine, rubbing pairs demand protection that traffic light oil cannot provide.
If you do decide to buy oil in an untested place, be sure to save the check and take a picture of the canister, which in case of problems will help prove the fact of purchase, although it will be extremely difficult to return money for oil already poured into the engine.
Chemical composition: base and additives
The quality of motor oil depends on its composition. 10w 40 It is usually produced from a mineral base with hydrocracking components or is semi-synthetic, and additive packs are key: antioxidant, anticorrosion, detergent and dispersant.
In counterfeit products, which include the category of oil in question, instead of expensive additives, cheap meerka, graphite or even spent transmission material is often used. Cleaning properties in such liquids either are completely absent, or work aggressively, tearing off pieces of old soda, which then clog the oil receptacle net.
Laboratory studies show that traffic light oil often exceeds sulfur and ash, leading to rapid oxidation of the oil and the formation of acids that begin to corrode the crankshaft liners and other non-ferrous metal parts, the resource of such oil rarely exceeds 2-3 thousand kilometers, after which it turns into a tar-like mass.
| Parameter | Original 10w 40 oil | "Oil from the traffic lights" |
|---|---|---|
| Basis | Mineral/Semi-Synthetics | Working out / Industrial oil |
| Frozen temperature | up to -35°C | up to -15°C (often higher) |
| Alkaline number (TBN) | 8-10 mg KOH/g | 1-3 mg KOH/g (or 0) |
| Replacement resource | 10,000 - 15,000 km | 2,000 - 3,000 km |
Economic feasibility of the purchase
At first glance, it may seem like buying cheap oil is a reasonable savings, especially for a car that is going to be sold soon. corn-butterYou will probably have to change it after 2,000 km, rather than 10,000 km.
This means you have to buy 5 liters of oil 5 times instead of one, and on a kilometer basis, the savings disappear completely, and the cost of filters and replacement work increases fivefold, and there is always the risk that the engine will require repairs that will cost more than the price of the car.
You also have to consider the loss of time, and finding points where you trade, waiting in lines, or traveling to replace them, all of these are your resources. The stingy pays twice This proverb describes the situation with the purchase of fuel in questionable places.
☑️ Checking before buying oil
How to protect the engine and choose quality oil
To avoid problems with traffic light oil, you need to follow simple rules of choice: first of all, buy lubricants only from trusted chains, official dealers or large specialty stores, the risk of running into a fake there is minimal, since these companies value their reputation.
Pay attention to the manufacturer's tolerances for your car. The canister must have specifications on it. API (e.g. SN, SM) and ACEA (A3/B4) that meet your engine requirements, and if the label only lists generic phrases without specific tolerance codes, that's a cause for concern.
And don't forget to visually check the oil itself after you buy it, before you pour it. Pour a small amount into a transparent container. The liquid should be uniform, without visible inclusions, flakes or bundles. The color can range from light amber to dark brown, but the transparency should be maintained.
⚠️ Attention! If you hear a knock on the engine after you change the oil to a budget one, or you notice a drop in pressure, immediately turn off the engine. Further operation may lead to liners turning and bullying in the cylinders.
FAQ: Frequently asked questions
Can I mix the “butter” with the usual?
Chemical composition is unknown, and when mixed, additive coagulation, precipitation, or foaming can occur, guaranteed to lead to oil starvation.
Is it true that this oil is better at washing the engine?
No, it's a dangerous misconception: an aggressive wash cleans the dirt with pieces that clog the channels, and a quality oil washes softly, keeping the microparticles suspended until the next replacement.
How often should you change 10w 40 oil if it is purchased in an untested place?
If you still poured doubtful liquid, the replacement interval should be reduced to a minimum - no more than 2000-2500 km. But it is better to drain it immediately and not risk the engine life.
Is there a difference between gasoline and diesel engine oil in this segment?
Yes, the difference is huge. Diesel oils contain more alkaline additives to neutralize sulfur. A bay of gasoline oil (or surrogate) into diesel, you quickly ditch the particulate filter and turbine.
⚠️ Warning! Remember, the engine warranty is void when you use oils that don't meet the manufacturer's specifications, no matter where you bought them.