sae-30 non-detergent
SAE 30 or 10W30 full synthetic.
5w30
it will hold about a half quart of oil
SAE 10w30 Full Synthetic.
Oil change indicator will come on at 49 hrs for two hrs of operation than will reset itself.
For a Briggs and Stratton motor 3.5 motor used straight gas and oil in the crank-case, there is no ratio.
On the bottom of the mower, it takes 3/8" socket driver (no socket) to remove it
there should never be oil in the carb. if there is then you have a problem. have you tipped the motor on its side on the carb side?
?? What filter? I gather it is a walk-behind mower. Just change the oil every 25 hours to keep it alive!
There are many reasons why you engine could be running hot, if this engine is on a mower, you may be using it to heavily in the heat, your air intake for the flywheel could be clogged with grass, or it could be low on oil, depending what engine it is.
20 oz. when bone dry, but only about 16 oz. will come out during an oil change.