Always change the oil when the engine is warm, as this allows old oil to drain more completely, carrying with it the contaminants that have settled in the crankcase. The Role of Additives in Engine Longevity Modern engine oil is a complex chemical cocktail, and the additives are just as important as the base oil.
Maximize Engine Longevity with the Right Oil for Your Lawn Mower
Conversely, in extreme desert heat, a 15W-40 might be considered to maintain a stable film thickness. Conventional oil is refined from crude oil and contains impurities; it is effective but tends to break down faster under the high stresses of a small engine.
Selecting the correct oil for lawn mower engines is one of the most critical maintenance decisions a homeowner or groundskeeper can make. New engines typically require a break-in period where the oil is changed after just a few hours of operation to remove microscopic metal shavings.
Maximize Engine Longevity with the Right Oil Additives
Small engines operate at much higher RPMs and require different formulations; using car oil can cause foaming and inadequate lubrication, severely damaging the engine. For most small air-cooled engines, 10W-30 is the universal standard, as it provides adequate protection across a wide range of temperatures encountered in outdoor power equipment.
More About Oil for lawn mower
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