[Karmalakas]

Need your opinion. My dealer is offering it and I don't know if it's worth to add some weight for less noise in the cabin.

 

[Alexr]

I am sorry I know nothing about Dinitrol. But, I did find the engine a touch noisy when I first got it. Since then:
1. put it into eco mode. Much quieter.
2. Run it for 3 months/2600 miles, and it has got quieter.
3. Put in half a tank of 97 octane fuel (Bp ultimate)
and it now just hums along the road. I would certainly not be looking to spend money making it quieter.

 

[Karmalakas]

Dinitrol is meant to reduce some noise from the road (claimed double reduce). Car's bottom part is covered in it. It becomes like a rubbery material of ~3mm thick.

 

[Garry]

Certainly sounds interesting but not heard of it before. I'm guessing Juliano might have some input