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That depends entirely on the engine. All of my newer Briggs and Stratton engines recommend single weight engine oil in the sump, 30 weight for summer. Use detergent motor with at least an API designation of SG (SH, SJ) and you should be okay.
Some lawnmowers use 2 cycle engines which require a special 2 cycle oil mixed with the gasoline.
For a new lawnmower use the oil that the manufacturer recommends to maintain your warranty.
If you want a more specific recommendation you will need to provide specific information about the engine and its age.
What else can I help you with?
What kind of oil should you use on a Craftsman lawnmower?
30 wt
What kind of oil does a craftsman Briggs and straton lawnmower 4.75hp use?
5w30
Can you use lawnmower oil for your snowblower?
Yes 10w30 is a good oil for snowblower or lawnmower.
What kind of oil should you use on a Craftsman 5.5 Gold Lawnmower?
Any straight 30 weight should do.
What kind of oil do you put in a quicksilver lawnmower?
SAE 10w30 weight synthetic oil.
What happens if you use the wrong oil in your lawnmower?
If the wrong oil is used in a lawnmower, do not start it. Simply drain the oil as completely as possible and fill with the proper oil.
Can you use non-detergent oil in a lawnmower?
NO, not in any lawnmower made in the last 40 years. Use SAE 30 or SAE 10W30 detergent oil.
Can you use 5w50 oil in your lawnmower?
You must use the oil that the manufacturer recommends in the handbook.
What kind of oil goes into lawnmower?
SAE 30 non-detergent is recommended by most engine manufacturers but you can use synthetic 5w-30 for winter use.
What oil weight for 4 stroke engine?
What kind of engine? lawnmower, car.
What kind of oil for Briggs and stratton 4.5 lawnmower?
straight 30 or a 10w30
Can you use regular motor oil in your lawnmower?
yes yes
