hi I’m new here and I have some ? About my vt 2013 car had one owner i’m having a shaking or idle problem the car got 5700 Miles on it I change the spark plugs they were pretty bad and did a oil change what else could it be no check engine light is on
I think you're okay with those plugs as long as you gapped them correctly to OEM specifications.
I'd suggest to run some gas additive for a few tankful(s) of fuel, and don't scamp on the additive.
I also suggest to go with a top tier gasoline form now on in, your engine doesn't like low tier gasoline.
You'll find that trying to save money with this engine is counterproductive. The smart thing is to go OEM and avoid unexpected consequences.