What oil to pour in the lawn mower 4t

Let’s take a look at the gradation of oils for four-stroke engines

When choosing oil for this type of engines, we are guided by the same rules that apply when buying car engine oil. If we talk about GOST and its classification, it is now very similar to the global SAE. On the package you can see the specifications for use at certain temperatures and climatic conditions that are followed by all the world’s major brand manufacturers.

It is clear that in winter the four-stroke units are used less frequently, however one can see a huge selection of them in the stores Any owner who has the appropriate equipment can choose a suitable compound, of course in the context of the recommendations of the manufacturer of the technical equipment. Advice on the use of a particular oil is given in technical documents.

4TD motor oil is a unique developed type, created directly for air-cooled four-stroke engines running on gasoline or other types of fuel.

It is based on mineral and synthetic purification components. These are polyalphaolefin oils with a whole range of additives. They guarantee excellent protection for the engine against deposits in the piston group and crater deposits, prevent the formation of coke in the rings and significantly reduce the power consumption of the machine. In addition, this group of oils has a high barrier to thermal oxidation and wear of parts due to anti-seize components.

Changing the Oil in your Patriot Lawnmower

pour, lawn, mower

Despite the fact that the overall design of four-stroke lawnmower engines are similar to car engines, they still have important differences: in order to reduce the price of the product at lawnmowers excluded oil pump and generally the system of oil supply, it increases the requirements to the viscosity used in the motors of garden equipment. The engine oil in the lawnmower engine is distributed by the crankshaft: it is scooped out of the crankcase and sprayed onto the parts. Because of this design, the viscosity of the lubricant must be thick enough to prevent the oil film from sticking to the parts and not be too thick so as to hinder the movement of parts or cause a hard crust.

On the other hand, lawnmowers operate mostly at positive ambient temperatures and the load on their engines is not as severe as on car engines. Lawnmowers do not usually require a cold start in frosty conditions that would severely limit the life of a car engine and require low-temperature properties from the lubricant.

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Even on the contrary, lawnmowers are usually air-cooled and therefore have higher engine temperatures than liquid-cooled car engines.

The first filling is designed for running in of the engine. after five hours of work it is replaced, and then the new grease can be used for the whole season. Subsequently, replace it according to the regulations after a certain number of moto-hours, or drain it at the end of the gardening season and pour a new one for the next year.

How To Service Your Lawn Mower

Choice of oil manufacturer

Shell Helix Ultra has long been established on the market. This is a synthetic oil created from natural gas. Contains a lot of additives that help much less wear and tear on the trimmer.

Rasenmaher makes quite good mineral greases specially formulated for garden appliances.

Liqui Moly makes a quality oil with additives that are environmentally friendly.

Oils should be differentiated according to their viscosity.For ambient temperatures of.10°C to 35°C SAE 15W40 or 15W30 are suitable. For colder weather it is better to use SAE 5W20, SAE 5W30, SAE 10W30.

Tips for choosing lawn mower oil

Almost every modern manufacturer of garden tools also produces oil for it. It comes under the same brand name and it is recommended to use. Here it should be understood that it is not the brand itself that produces the lubricant, but a third-party company, but according to studies and tests, this particular product fully meets the requirements of the company that makes the tool. The problem is that such oil is, as a rule, more expensive than usual, but it’s easy to find its analogues by its composition and quality if you know what nuances to look for.

The most important aspect is the set of additives used. It differs depending on the type of engine, but with a few exceptions, the composition of oils is the same.

It is much more important not to fall for a fake, which, unfortunately, there are many on today’s market. Here it all depends on the brand. Top companies pay a lot of attention to the protection of their product. It can be holograms, complicated texture of containers and so on.

As for the question, how much oil to pour in the engine, relevant only for 2-stroke models, you should always follow the manufacturer’s advice. It’s indicated in the manual. But it happens so that the information on the mower‘s data sheet and the oil bottle is different. In this case, the information from the bottle will be priority. On average the ratio of petrol to oil is 1:50.

Most modern lawnmowers use two-stroke, air-cooled gasoline engines. The operating volume of power units rarely exceeds 200 cubic centimeters. This design allows for moderate weight and unit efficiency.

In some cases, companies make lawn mowers with water-cooled four-stroke engines. In this case, you should buy oil suitable for automotive engines. the construction of the internal combustion engines in this case will not differ.

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Change the Oil & Tune Up Lawnmower. GardenFork.T

Which oil and gasoline to choose for filling lawn mowers with a two- or four-stroke engine

LIQUI MOLY Rasenmaher-Oil 30 3991 Seasonal Lawnmower Engine Oil 1L is for both gasoline and diesel engines in air- and water-cooled four-stroke garden and power equipment. The product is recommended for use at temperatures above zero. The use of this oil guarantees high stability and durability of the units.

Why do we need oil??

Gasoline lawnmower engines are internal combustion engines (ICE), where the driving force transmitted from the ICE to the working parts (cutting blades) is derived from the energy in the cylinder combustion chamber when the fuel mixture ignites. The combustion causes the gases to expand, forcing the piston to move, associated with a mechanism to further transfer energy to the final organ, which in this case is the blades of the lawnmower.

The engine, therefore, has many large and small parts that need lubrication to not completely prevent abrasion, destruction and wear, but at least to slow down these negative processes for the mechanism as much as possible.

Due to the engine oil that enters the engine and covers its rubbing elements with a thin layer of oil film, the appearance of scratches, scrapes and burrs on the metal surface of the parts almost never occurs on new units.

But this cannot be avoided over time, as the gap between the joints is still worn out. The higher the quality of the oil, the longer the service life of the machine. In addition, the following positive phenomena occur with quality lubrication:

  • better cooling of the engine and its parts, which prevents overheating and thermal shock;
  • the engine is guaranteed to work under heavy loads and for long periods of time without interruption when cutting grass;
  • it prevents internal engine parts from corroding during seasonal downtime.

The principle of operation of a four-stroke gasoline engine

During intake, the piston lowers from the top dead center (TDC) to the bottom dead center (BMT). In the process, the cams of the camshaft open the intake valve, through which the fuel mixture is sucked into the cylinder.

When the piston moves in reverse (from the NFT to the TDC), the fuel mixture is compressed and the temperature rises.

Just before the end of compression, a spark ignites between the electrodes of the spark plug, igniting the fuel mixture which, as it burns, forms combustible gases that push the piston down. Reverse stroke occurs, during which useful work is performed.

When the piston reaches BDC, the exhaust valve opens, allowing the upward moving piston to push the exhaust gases out of the cylinder. Exhaust is occurring. At the top dead center, the exhaust valve closes and the cycle repeats.

First: What kind of gasoline to use

We recommend using clean, fresh, unleaded gasoline with the octane number of A92. Air-cooled engines are not designed for AI95 or AI98 fuel. gasoline of grades 95 and 98 contains additives, which are destructive to engine piston system, leading to overheating and engine failure.

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Do not mix oil and gasoline. This can lead to engine malfunctions that are not covered by the warranty.



Group: Member (100) Messages: 434 Registration: 24.9.2011 From: Moscow User №: 33 529

Need Advice. I’m buying a lawn mower to replace my previous one. the salesman was confused about the engine oil. Says I need a special for 4-stroke air cooled engines.

Lawn Mower Oil Guide: What Type of Lawn Mower Oil Should I Use? | eReplacementParts.com

Asking. what brand? answers SAE 30. I said, what’s the difference? Sae30 for water cooled and air cooled engines. the salesman hesitated, said he would call back tomorrow.

I’m sitting here thinking. is there a difference? hesitated. I used it in my previous car. There is mobil sae 30 oil at the cottage.

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Right. In the previous one, too, did not have any problems and here he is something stubborn I even hesitated. And the price of oil is great

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I put the same oil in my lawnmower as I put in my car. 5w40. No need to bother, IMHO.Engine manufacturers (like BS, Honda) don’t make oil at all. Honda uses Esson Mobil oils (from the car I remember), the others. khyzy.Why buy a liter of cheap. from the cheapness of what’s in the cans) of the “original” oil at a frantic price? Well, if you are afraid of super high temperatures. do not use 5W40, for example, but 5W50, 5W60.I used to ride on 4-stroke scooters and tuned them up. Used regular motor oils 5W50. No excessive wear from the “wrong” oils after the tuning events.

The BS engines in gardening equipment (mowers, cultivators, scarifiers) are primitive, those engines don’t even have an oil pump. Т.е. You don’t need any super-duper oils there, SAE 30 points out to it too)

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