I can not find any information on a diesel interference. Can you tell me what it it? I only can find information on a interference and non-interference.
I can only guess that someone is referring to interference of a diesel engine. And the ION is not a diesel engine.
In the old days some gas engines were known to diesel or ping. This was caused from poor octane and engine timing. With today’s technology engines are equipped with a knock sensor that prevents this from happening.