Hey guys. Was using Standyne's Performance Formula. When using it, the exhaust didn't really smell like a diesel engine. Kinda different.

Now I have switched back to Power Serice Diesel Kleen, and it smells like a diesel engine again.

Anyone notice this type of thing? Wondering if I ever had to have an emission test, if Stanadyne would be better to use?

Any thoughts?

i've noticed the same thing - personally I don't like the smell of my exhaust when I add Stanadyne :)