In lawn mowers & Edge trimmers you mix it by hand (add it to the petrol manually) but two stroke motorbikes have a separate tank called an Autolube where you add it & it mixes in with the petrol automatically.
You do get two stroke diesel engines, but they are rare so don't worry about them.
There are people who claim there are advantages to adding 2SO to diesel in your (4 stroke) diesel 4x4. However this is unfounded nonsense.
If you would like to discuss the advantages of adding 2SO to diesel, please reply here to get banned....
