[STIHLNTIME]

I've used additives in my diesel engines for over forty years, both in trucks and ag applications. Over the years I've used Power Serve, Howse, Hot Shot usually whatever is on sale at the local farm store. I run it in every other tank during the summer and usually every tank during the winter as we get a lot of days in the teens. A good friend of mine who is a German national that has a degree in mechanical engineering just adds a quart of ATF to every other tank. He swears it detergent additives keep the injectors clean and lubed. Knock on wood, I've put thousands of hours on diesels and have never had an injector or pump issue. I believe keeping fuel filters changed, as well as water traps drained is just as important as any additive.