Only SAE 30 is equivalent to SAE-30
No, absolutely not.
SAE30
ANSWER:?SAE30 oil above 40 degrees F (4 C) and below this temperature use 5W-30
It is a little thick. You should use sae30 or 10w30 (on cold temperature)
If the recommended oil is SAE30 why would you use SAE 10W30? Some mowers recommend either of these weights but if your recommends 30W then using 10W30 will cause it to use oil.
If it has a Briggs and Stratton engine you need SAE30. If it is a Kohler it uses 10W30.
use SAE30 oil Recommended for use in veteran, classic and vintage cars, motorcycles and tractors which do not have the full flow type of oil filter. It is a low dispersant oil which allows the combustion chamber contamination to drop harmlessly into the sump
10W30 can be used, but SAE30 is best. 10W30 can run a bit hot, in warmer climates.
Briggs & Stratton small air cooled engines use SAE30 weight oil or SAE 10w30 if they will be operated in cold conditions. I highly recommend you use Synthetic oil in any air cooled engine.
If the manufacturer of the lawnmower specifies only SAE 30 then do not use SAE 10W-30. However on most mowers you can use either weight. I highly recommend you use synthetic oil in any air cooled engine.
Use exactly what Honda recommends and nothing else which is SAE 10w30 for general use. Using anything else may void your 7 year warranty. I recommend you use synthetic oil in any air cooled engine.
I am not sure what you are wanting to use the oil for. If it is for a lawn mower, most of them take either 10w30 or SAE 30. They are not the same oil. You will need to refer to your engine manufacturer for the oil required for your engine. Normally most Briggs and Stratton and Tecumseh engines use the SAE30 oil. While most Kohler engines use 10w30.