Wait. What? Are you implying there is no such thing? Next you are going to tell me I've been wasting my money on this ultra high performance blinker fluid!!!
You know, the owner's manuals say that you should only use premium gas in a vehicle requires it. Otherwise, you're wasting money. It's the same with blinker fluid. It is a complete waste to buy high performance blinker fluid when budget blinker fluid works as well in 93.7% of the times as high performance fluid does.
No. A lot of older guys call diesel fuel injectors spark plugs. It's just a thing. Kind of like calling the charged air cooler the 'air to air'
But in essence a CAC is an air to air, but injectors are not spark plugs. I've been around trucks since I was 3, and I don't remember ever hearing injectors referred to as "spark plugs".