No, 30 wt or 30 weight oil is a non-detergent oil whereas SAE30 is a detergent oil. Read the label on each container. Any motor oil which is non-detergent blend will be clearly marked as such. Conversely, any oil which is not specifically marked as non-detergent is by default, a detergent blend. Most non-detergent oils will be marked as ND30.
No
SAE 30wt
Not in any instance I can think of.
Check the owners manual on the web for your product, for example the F200 series specifies the same oil as the engine SAE30
30wt
SAE30
My 6.75hp Briggs calls for 30wt, so I would make a reasonable assumption that the 6.5hp calls for the same.
A good quality 30wt is Briggs recommendation
30wt oil of any brand will work
sae30
SAE30
it should weigh about 440 lbs