I use red max in my 3w-75 for break in purposes it works just fine for me. I have used this oil for about 10 years now. Mostly in red max weedeater and redmax leaf blowers which are a high end commercial grade products for the lawn care business. Although all the red max products had zenoah engines in them. I started using it in my new 3w this past summer for break in purposes. I have had no issues with it. I dont know who manufactures it though. Hope this helps
Mike