Which cleaner for the plastic gauge cover

"solvent/cleaner" sounds a little ominous. Best bet, maybe something designed for cleaning eye glasses? And: spray it on a cloth, not directly on the display.

I get these small spray bottles of solution from my optometrist. Fine for coated plastic lens, and I use it on camera lens filters and the like.

Google:

Alcohol-free Anti-Reflective eyeglass cleaner

Something like windex is probably fine too. Again: spray onto cloth, not directly.

 

I use exclusively dihydrogen monoxide in combination with a clean microfiber cloth.
Dihydrogen monoxide is a strong solvent, but completely safe for all plastics.

Edit: No, this is not a joke.

 

I'd most likely start with a soft cloth, soaked in warm water with a shot of dish wash liquid, then well rung out.

 

I prefer to use industrial strength HIJKLMNO.

 

Oh, I just figured out what dihydrogen monoxide is: clever clogs

 

when I come off the oil drilling rig after a long hard 12 hr shift, I jump right in my prius and smear greasy sludge all over the interior. and I just leave it there. It no longer looks like a sissy car.

 

This is what I use. Works like a charm.

 

I use Pledge Mulit-Surface on the dash and gauge cover. Applied using a microfiber towel. Honestly you're not going to hurt it unless you use an orbital sander or a paint stripper. Worst case scenario you're cleaner streaks, Windex, vinegar and water solution, etc. will be good options too.

 

What about Pee ?

 

No solvent or cleaner is good for clear plastic. Gently blowing off the dust with compressed air and following with a damp microfiber cloth is the best. The more you rub, the more the clear plastic gets scratched and hazy.