by Susan Revermann
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Yanmar American Corp. built a line of Yanmar tractors that are found on farms across the country. These tractors have a diesel engine that requires specific oil categories and types that are compatible with diesels. The viscosity of the oil may vary slightly, depending on the temperatures in which you are using the tractor. It is vital to check and change the oil regularly for the safety, protection and efficiency of the engine.
Make sure you get the proper oil category for the diesel engine found in the Yanmar tractor. If you have a four-stroke, high-speed, low-emission diesel engine, use a CG rated oil. Off-road and heavy-duty diesel engines use the CF oil category. If you have a heavy duty diesel engine that also has a turbocharger, use a CE oil category. Look on the oil container for the proper rating and make sure the oil is designed for diesel engines.
A Yanmar tractor may have a different oil viscosity; 5W-30, 10W-40 and 15W-40 are the most commonly used viscosities for this type of diesel engine. The first number indicates the viscosity of the oil when the engine is cold. The “W” stands for winter and the second number indicates the viscosity of the oil in a hot engine. Choosing an oil with a lower first number will give you better protection when starting the engine in colder weather. You can also ask the sales representative for further clarification if you are unsure which is the best option for you and your area.
When to change the oil
It is vital that you check and change your oil frequently. If you have little or no oil pressure, it can block your engine and completely ruin it. Check the oil before each use to make sure it is safe. Change the oil and filter every 100 hours of use.
Oil change procedure
You should follow the proper oil change procedure to get the most out of your new oil and filter. Place an oil drain pan under the oil pan. Remove the oil drain plug on the side of the oil pan and allow the oil to drain completely before replacing the plug. Remove the oil filter and gasket. Clean the area with a cloth. Make an oil seal around the filter area and put a new filter and gasket in place. Tighten until snug. Add oil in small increments and check the dipstick until it is at the proper level. Start the engine and let the oil circulate for a few minutes. Recheck oil level and add as needed. If the oil pressure light comes on and stays on, shut off the engine to add fluid and restart it. Check for leaks under and around the tractor before removing it for use.