I drive with my windows down alot and I've noticed dirt buildup on my headliner. What's the best product to use to clean the headliner for the coupe?

2003 G35 Coupe 6mt Diamond Graphite
AIM= bkchang79
http://www.sounddomain.com/id/bkchang79

 

LOL. I had the same problem. It gets really bad on the seatbelt extension piece and on the headliner right above the rear window. I actually just got done doing my interior. I was using Stoner Trim Clean (available at Pep Boys, etc.) for the plastic stuff and decided to give the headliner (where it was dirty) a quick wipe. It worked well. Don't saturate the applicator. I was using a cheapo terry cloth applicator. Just spray a lil on the applicator and give it a quick pass.
You may also want to try Woolite foaming carpet cleaner. I never tried it on a headliner, but I think that should work well too. The foam is light and shouldn't really soak in. Have a wet/dry vac on standby because the foam brings the dirt to the surface and then you just vacuum it up. Again, I wouldn't spray the whole liner with it, just the small spots you need. I would also test a small area that no one will see first.
I think the stoner cleaner is the way to go, it worked for me.

 

My girlfriend accidently got lipstick on my headliner. After calming down, she recommended I used a product from Home Depot call Folex (or something sounding like it). It is a product that removes stains from carpets. One or two sprays and the lipstick disappeared, no joke. I didn't wipe or anything. I eventually did wipe it, but it looked good as new.

2003 IP Coupe. Non-Navi. 19" DTM Kreuz 7. V-Kool & Metallic Tint.