The engine oil capacity should be 0.47 L (16 oz), the oil viscosity should be SAE 30 or SAE 10W-30 detergent oil, and the API service classification should be SJ or higher. Move the machine to a level surface. Remove the dipstick by rotating the cap counterclockwise and pulling it out.Click to see full answer. Subsequently, one may also ask, how much oil does my lawn mower take?Most small engines need 20 to 24 fluid ounces of oil. Small engines typically use SAE 30 single-weight detergent motor oil service-rated SG or higher, but some can use multiviscosity oils such as 10W-30 or 10W-40. Fill the crankcase slowly. Keep tabs on the oil level by checking with the dipstick as you add oil.Likewise, how much oil does a Lawn Boy mower take? Slowly pour 20 ounces of SAE 30 motor oil into the fill tube. Secondly, what kind of oil does a Toro lawn mower take? For Recycler® and Super Recycler® mowers: Recommended Oil type for Toro Walk Behind Mowers, 4-Cycle engines – SAE 30W Detergent oil with an API service classification of SF, SG, SH, SJ, SL, or higher. Run the engine for five minutes to warm the oil so it drains better.What happens if I put too much oil in my lawn mower?Every lawn mower needs to oiling to prevent overheating while in use. Oil also lubricates your mower to make it work efficiently. ?Too much oil in the crankcase can damage the motor of the lawn mower. Too much oil can also cause the lawn mower to leak which can damage other parts of the lawn mower other than its motor.