VinceBlack

This stuff is excellent, been using it for a while myself.

DTOM

In a pinch, I'll use 3m Silicone spray.

My goto is: nextzett Gummi Pflege Rubber Care Stick

wonka12_98

Genuine GM Fluid 12345579 Dielectric Silicone Grease - 1 oz

Its $12 at Amazon

zone5ab

Clear silicone
even the electronics silicone will work

seniorstorekeeper

May not be the thing to do but for years I have been using a small can of 3 in 1 oil on mine, just take a small microfiber towel and put a few drops on it and spread it on all the rubber stripping and seals. When it dries and soaks up in a few dry spots, will apply more, when it all looks uniform, I take another small microfiber towel and wipe it off. If you accidently get it on trim or plastic, wipes off very easily and does not draw dust when you are through. May not be the thing but the rubber on my cars has held up well over the years.

markeaux

I had several small squeaks from both tops and the rear hatch on my 19, and this worked perfectly. The built-in sponge applicator makes it super easy to apply, too.

One top was missing a rubber frame shim, so I ordered one plus a few extras:
https://www.gmwholesaledirect.com/oe...Y4LWdhcw%3D%3D

skb40466

I agree with Nick on Shin-Etsu grease which you can buy online or from any Honda Dealership in the parts Dept. A little goes a long way and it is quite durable.

Purchased originally for my Civic and TL, but my Corvette loves it the most. Wear disposable gloves and watch your sealing come back to life with pliability and color.

Stay healthy everyone.

blackmagic9805

I’ve been using clear dielectric grease. (Looks like a clearer version of petroleum jelly).

phalse

Gummi Pflege. here's how you know it works..

i bought the stuff directly from them therefore had to wait a reasonable amount of time for it to be shipped. didn't wanna deal with fakes off of amazon etc.

i properly cleaned then treated the seals on my car then put the roof back on and life continued. big mistake. this stuff works but it seemingly works so well that from then on, there was now a slight indentation in the seal from the weight of the roof panel. yes i'd wiped off the excess etcetc but bottom line, this stuff REALLY softens up the seals, therefore its clearly doing a good job of getting into the rubber, yadda yadda.

clean then treat the seals then let the roof panel just sit around for a while THEN put your roof back on, is my vote. Gummi Pflege is the real deal. i also used it on the seal around the rear hatch and doors and so on, and all still feel like buttah, baby. forget that 303 nonsense, it is only and exactly what it appears to be.

joemessman

I have to agree. I have been using the 303 and can't tell the difference in the seals using just water or the 303. Snake Oil?

DTOM

Our rubber seals are made of EPDM Rubber.

Gummi Pflege is one of the better products that I've used for EPDM Rubber

1999PewterCorvette

Only have to remember one...... GUMMI PFLEGE. !!!!!!!

Borntorun04/17

Anyone tried this ?

joemessman

I did. Too greasy. Dust and dirt started to stick to the gaskets. Had to clean up with simple green.

blackmagic9805

if you are referring to dielectric grease, it sounds like you used way too much.

You just want to just apply enough to be able to rub it in, let it sit for about 30 minutes and then wipe well with a towel. I used it on my C6 once every spring for 14 years and now use it on my C7, and never had a single squeak or deterioration of the rubber gaskets, and no dust or dirt accumulation either.

it was what GM recommended until the recently released “gasket lube” Came out. (It is probably the same stuff or a close variation of the original).

joemessman

I put it on very sparingly. But, oh well.

jimmbbo

In tracking down some really annoying squeaks, when I tried silicone grease, it was a nightmare... It is a mess to apply, has an unnatural ability to adhere to places it shouldn't, and it is a b**ch to remove from those surfaces. It was mostly effective on removing the squeaks, but it gummed to a waxy semi solid on the seals after about a month in use. I removed the residue, cleaned the rubber with denatured alcohol and made three applications of , drying in between. The result? Squeakless going on five months...

Gearhead Jim

At one point, GM recommended the Super Lube paste for C6 weatherstrip. I tried it and it worked well at first but about 6 months later it had turned into a gooey sticky squeaking creaking mess that took me a couple of hours to remove. I went back to the Dielectric Silicone Grease and had the usual good results except that it does tend to be, uh, greasy; and attracts dust unless allowed to sink in for an hour or two and then all the excess wiped off.
I also tried the genuine GM Weatherstrip Lube on a couple of Corvettes, it's outrageously expensive and doesn't work any better than the DSG while being only a little bit less greasy.

Gearhead Jim

The weatherstrip on our 2017 Coupe seems much better quality than previous Corvettes, and I didn't treat it with anything until 3 yrs/30k miles. It started to squeak just a little, so I used the Dielectric Silicone Grease on the rubber and on the latches. The squeaking got much worse.
After experimenting, I discovered that the trick is Dielectric Silicone Grease on the rubber (wiped off after sinking in), but Super Lube paste on the latches and other hard contact surfaces. The improvement going from DSG to SL on the latches was amazing.