The approach of autumn for the owner of water technology always means one thing: time to prepare the iron horse for a long hibernation. And if the issue of draining fuel and flushing the cooling system is relatively simple, then protecting the internal components from rust requires a more subtle approach. preserverIt will really save the piston group from acidifying over long months of downtime.
Don't underestimate the importance of this procedure. Residual moisture in the crankcase and on the cylinder walls, when mixed with combustion products, forms an aggressive acidic environment. Two-stroke engines They suffer from this particularly badly, because the lubrication in them is done by oil added to gasoline, which eventually loses its properties. Yamaha, Tohatsu or Mercury.
The market offers a variety of options, from universal spray oils to specialized formulations for engine-preservationIt can be difficult to sort out the product and buy exactly what you need, especially when there are cans on the shelves with similar names but different chemical bases, and it is important to understand that ordinary motor oil poured through a candle hole will not give the same effect as aerosol foam, which envelops all hard-to-reach places.
⚠️ Warning: Never use pure gasoline or solvents to preserve cylinders. They will wash away the residues of the factory lubricant and lead to dry friction on the first run, which can cause piston group bullies.
Why You Need a Chemistry for Winter Storage
The preservative's main objective is to create a strong but elastic film on metal parts that prevents oxygen and moisture from reacting with the metal surface. Simple oil has the ability to drain downwards under gravity, leaving the top of the cylinder and valves (in four strokes) unprotected. The spray, when it gets inside, expands in volume, turning into a thick foam that fills all the cavities.
In addition, quality compositions contain corrosion inhibitors These additives chemically neutralize the acidic environment that you already have in the process of operating, and if you're running a saltwater motor, having these components in the spray is critical, because chlorides can eat aluminum even in a couple of months of idleness in a warm garage.
Many water-engineers mistakenly believe that it is enough to simply shut off the fuel faucet and let the engine stall. carburetor or fuel-nozzle There are gasoline vapors that evaporate and leave a resinous coating, and specialized sprays often have cleansing properties, helping to dissolve this plaque and prevent ducts from coking.
- 🛡️ Creates a sticky protective film that does not drain from the walls of the cylinder, unlike liquid oil.
- 💧 Replaces residual moisture from hard-to-reach places of the crankcase and exhaust system.
- 🧪 Neutralizes acidic compounds formed during the combustion of the fuel mixture.
Preservatives: What to choose for your engine
When you go to a store or shop online, you come across a number of products, the most popular ones are oil-based aerosols, which create a very dense, greasy layer of protection, and they're perfect for the use of these compounds. two-strokewhere the crank-shaft mechanism and crankshaft bearings need to be protected. Liqui Moly or Motul.
The second type is preservative cleaner sprays, which often contain solvents that first clear the surface of the sodium and then leave a protective layer, and are better used if the engine is running out of order or on poor-quality fuel, but for clean preservation for long winters, the first type is better.
There are also generic sprays that are marketed as a means of caring for all equipment, which are cheaper, but their protective properties may be inferior to specialized ones. four-stroke complex gas-distributionChemistry is not a good thing, cheap spray can dry by midwinter, leaving the metal defenseless.
⚠️ Note: When buying, pay attention to the ignition temperature. Some cheap sprays have a low flash point, which makes storing them in a residential area or near heating appliances dangerous.
External preservation sprays, which protect external aluminum and magnesium alloys from oxidation, are not internal nodes, and often contain Teflon or silicone, creating an anti-rain effect and preventing the appearance of whitish plaque on lower unit.
Instructions: how to apply the spray for preservation
The process of preservation requires preparation. The motor should be warm, but not hot. The optimal temperature is warm when the metal still stores heat after operation, but no longer boils. This helps the composition to spread better and penetrate the microcracks. Before starting the procedure, make sure that the engine is installed vertically.
First, you need to turn the spark plugs out. The candle holes will be used to do the basic processing. Turn on the starter (or pull the starter on yourself) so that the pistons are at the bottom dead point. Inject the contents of the cylinder into each cylinder. The dosage is usually indicated on the cylinder, but on average it is 3-5 seconds of continuous spraying.
After injection, you have to turn the crankshaft several times manually, and at low power, you can do this by pulling the starter handle (pre-disabling the ignition or stop-motor switch) so that the pistons go through a full cycle. conservatory It is also recommended for four-strokes to remove the air filter and spray the intake manifold into the intake manifold when scrolling the starter.
☑️ Checklist for engine conservation
Once the composition is distributed, the candles can be wrapped back, but not tightened to the end so that the condensate can go out, rather than pressing on the piston. Some craftsmen advise that after processing, the holes be closed with rags moistened with oil to block the air completely.
Should I start the engine after applying the spray?
Starting the engine after applying the preservative and distributing it to the cylinders is NOT necessary. You just create a smoke screen and pour candles. The main goal is to leave the film inside. However, if you use a spray to clean the carburetor before conservation, a short run is possible, but for final preservation, only a starter scrolling.
Comparative table of popular compositions
To make it easier for you to navigate the store and buy the right can, we have prepared a comparison of popular brands. Please note that prices can vary depending on the region and supplier, but the ratio of volume to efficiency remains a key parameter.
| Brand/Model/Model/ | Type of base | Volume (ml) | Features |
|---|---|---|---|
| Yamalube Storage Spray | Oily | 400 | Recommended for Yamaha engines, high adhesion |
| Liqui Moly Motor Innen-Konservierer | Oil-and-salt | 400 | Excellent protection against rust, sticky film |
| Hi-Gear Engine Protect | Synthetic | 450 | Contains antioxidants, suitable for 2T and 4T |
| Motul Engine Stop | Mineral | 400 | Budget option with good coverage |
When choosing, consider not only the brand, but also the type of packaging. Cylinders with a long thin spray tube are more convenient for spot application into the depths of the cylinders than conventional wide spray torches.
Where to buy spray and what to look for when ordering
You can buy a winter canning spray from boating stores, large chain auto parts stores, or marketplaces. Check the date of production when you order online. Aerosols tend to lose pressure or delaminate over time if they are stored in warehouses for years.
Pay attention to the integrity of the package. The dents on the cylinder may indicate a leakage, which will lead to a leak of the propellant gas. It is also important to check whether the expiration date indicated at the bottom of the cylinder has expired. An expired spray may not produce the desired foam, but simply leak out with a liquid.
If you buy goods from a physical store, shake the can. The liquid inside should roll freely, without the extraneous sounds of "rocks" (frozen contents or lumps). High-quality preservative It always has a homogeneous structure.
Buy canned spray in advance, in late summer or early fall. In the high season (October-November), popular models often disappear from the shelves and you'll have to take what's left or risk the engine.
Frequent errors in engine preservation
Even if you buy the best spray, you can ruin everything with the wrong actions. One of the main mistakes is applying the composition to a cold, long-cooled engine. On cold metal, the condensate could already settle, and the oil film will lie on top of the water without protecting the metal. The engine must be warmed up.
The second mistake is that you have to pour the spray over the top, and the excess oil you put on the first run in the spring can create a hydraulic shock, or you can just fill the exhaust system with a slim, but a solid film is enough.
The third mistake is ignoring the fuel system, and while you're canning the cylinders, remember to add a fuel stabilizer to the tank and let the engine run for 5-10 minutes to get the mixture into the carburetor or ramp, otherwise, by spring, the gasoline will turn into resin. fuel-system It's going to require expensive cleaning.
⚠️ Warning: Do not store a canned motor in direct sunlight or in front of an open fire. Aerosol cylinders are flammable, and UV radiation can destroy the plastic elements of the daydvut and rubber omentation.
The main rule of successful wintering: clean engine + the right preservative inside the cylinders + stable fuel in the tank = easy start in spring.
FAQ: Questions and Answers on Conservation of Motors
Can I use regular motor oil instead of spray?
You can use it, but it's less efficient. Oil flows down from the cylinder walls into the crankcase, leaving the top of the piston group and the valves (in 4T motors) unprotected. The spray creates a foam that fills the entire volume and is held on vertical surfaces.
Do I need to wash off the preservative before starting in the spring?
No, you don't have to flush anything. When you first start, the preservative will simply burn with the fuel or mix with the new engine oil, and the only thing you need to do is let the engine run at idle speeds a little longer than usual, so that it completely warms up and burns out the residue.
How often should the conservation procedure be repeated?
The procedure is performed once a year, before being put into winter storage. If you plan to not use the boat for more than 2-3 months (for example, the whole season), conservation is mandatory.
Is the spray for rubber oils and gaskets dangerous?
Specialized compositions from well-known brands (Yamalube, Liqui Moly) are safe for rubber, plastic and non-ferrous metals, but the use of aggressive solvents or unknown “chemistry” can cause the ossels to swell and lose the tightness of the daydvut.