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A Briggs and Stratton 17.5 horsepower engine can use any type of small engine motor oil. A heavy duty motor oil is recommended.
what grade of oil on this engine
SAE30
sae-30
48 oz
The 15.5 Briggs does not have an oil filter.
Ordinary motor oil the brand hardly matters.
what weight oil for 6.5 engine
Click the link and find your engine for the exact capacity.
Briggs and Stratton is a select brand of lawn mower. When oiling one's Briggs and Stratton lawn mower engine, it is best to use a high quality oil. One can find such an oil at their local home improvement store, such as Home Depot.
1ml
Briggs & Stratton part # 491056 NAPA filter # 1348