Want to protect my interior from cracks. Is Turtle Wax F21 any good or are there better products that are reasonably priced?

 

pretty much anything with silicone will crack it, and its not really the light that will do it

silicone like plugs up the pores of the plastic so it cant "breathe"

id say really to just keep it clean with soap and water and keep the sun off of it

 

i just use a rag and warm water. i cant stand the filmy/greasy residue the cleaners/protectors leave behind. its been over 10 years and i have 0 cracks. but then again, theres not alot of sun here in oregon.

 

want to keep your interior looking new? TINT your windows. and clean it on a regular basis with plain old dish soap and water. I use 409 on the hard to remove stains though and resolve on the carpet.