I've got my fender liners off and have just washed them with P21S Total Auto Wash. They are a lot cleaner, but are a bit tired and grey looking. What product would you recommend to bring back some "zing" to them?

 

303 Aerospace or Griots Vinyl/Rubber. Will leave them looking natural and hydrate them so they last longer.

Products like Griots Undercarriage Spray will give it more zing but I believe it will deteriorate the liner with time.

 

Afshin, thank-you, as always. I already have 303. I'll give it a try.

 

Another quick, easy way is Adam's In & Out Spray. Just be sure to cover your tires when spraying anything in the wheel well