Kohler for sure
Briggs and Stratton and Kohler engines are considered quality components. Neither is likely to be better. However, the Briggs and Stratton brand is more popular.
If it has a Briggs and Stratton engine you need SAE30. If it is a Kohler it uses 10W30.
Briggs and Stratton does contract anyone to build mowers. The mower manufacturers contract Briggs and Stratton to build their engines (or whatever engine is on the unit). That is why you can have a Briggs and Stratton on most any type of mower. Same is true for Kohler, Tecumseh, etc. Not to say that the engine manufacturers do not build their own type of outdoor power tool but as the question states "snapper mower". Also keep in mind that if you have a snapper mower with a Briggs and Stratton engine and you need warranty work on the engine you need to go to an Authorized Briggs repair facility where as if you have a mower warranty then you need to go to an authorized repair facility for the mower manufacturer.
Briggs and Stratton...ask if you need help getting it running!
Originally from when Briggs & Stratton started business in 1919, the engine's were built in Milwaukee Wisconsin to 1985 and well into the 1990's. Recently great production is very little from were Briggs & Stratton was originally started. These day's there is great activity of Briggs & Stratton parts from China/Japan and Briggs & Stratton engine blocks being casted in Mexico. Truley a great devistation to a once GREAT engine. Which is why alot of people like myself will no longer recommend a Briggs & Stratton engine. Today your best bet is Kohler (still U.S. produced), Kawasaki or Honda.
briggs and straton, kohler, or kawasaki, depending on the model
To Determine what spark plug is in your 16hp enging you would need to be more specific. It could have a Briggs and Stratton engine or it could have a Kohler engine. Both engines use different spark plugs. The spark plug for the Kohler engine is part number 32295-1. The part number for the B&S engine is 43591-7
Reliable brands for an emergency generator include Kohler, Briggs & Stratton, and Coleman. The best thing to do would be to research what you need and to go from there.
There are a few brands of electric generator that are known for their reliability. These include Briggs and Stratton, Generac and also Kohler electric generators.
If it is a Briggs engine it takes SAE30. If it is a Kohler engine it takes 10W-30.
MTD Throrx engines are made by Kohler and Briggs and Stratton. Some Thorx small engines, for use in chainsaws, are made by Walburo Inc.
Briggs engine 30w detergent, kohler engine 10w-30