You seem to be having difficulty reading the dipstick.
A wipe-off with a suitable clean tissue, such as a hard-ish grade of toilet paper or hand-towel that wont shed lint, should remove any splash from engine operation.
If there are congealed rings of oil or dirt that are making it difficult to read, cleaning with a suitable solvent (petrol, kerosene, , acetone, white spirit, meths,vodka many etcs) should help.Just wet a tissue, wipe dipstick and then wipe dry with another one. This should not be required routinely
Having cleaned off your dipstick, carefully re-insert it, avoiding contact on the way in as much as possible,(perhaps guide tip with your other hand close to the target, retaining the tissue for the purpose) wait for a few seconds, remove and read
Lighting will influence ease of reading, so adjust appropriately, perhaps keeping some kind of lamp or torch in the car for the purpose.
I've never used anything as watery as 0W-30 and wouldn't want to, but I imagine it might be a bit harder to read than a higher base viscosity grade of oil.
There are reports of negative outcomes (gelling) from mixing oils. These wrecked engines, but they happened in extreme low temperatures in the US, and this phenomena is unlikely to affect you, though in general its probably better to avoid mixing oils.
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