rrwirsi

Need some opinions from forum's tech guys. Currently, I put on a thin layer of Dielectric Grease on all my weather striping each spring. GM recommends using their brand of fluid #3634770 (Amazon $58.73) for weatherstripping. Not sure of the chemical make up of the GM fluid. Your thoughts are appreciated on what you use and is their a GM fluid like substitute. Thank you.

ztheusa

Lemon Pledge

FX VETTE

My choice

The Rabbi

Trim shop said to use baby oil.

Vetteman Jack

I use a natural silicone lubricant on mine - keeps the weatherstripping looking and feeling like new. Got the stuff from a local body shop years ago.

glbeauchamp

Me, too...

Pounder

Chadwick's no sling tire shine !!!!! made all my hoses and weatherstrips like new !!!!!

Sonny71

I've been using Silicon grease for years, may try the Sil-glyde now.

jrprich

I go with 303 Protectant myself. Use it on all rubber, plastic, seats, etc. Great product!
Used to be mail order only, but now you can get it almost anywhere.

SG Lou

I may have to give Sil-glyde a try as well.

runner140*

Me too....Going to see if Amazon sells it....just looked & they do. Purchased.

ironranger

I use "AC Delco Dielectric Silicone Grease" which is the GM recommended lubricant. It is really expensive if purchased through the dealership, however, I purchased it on Amazon for $18.59. While it's still expensive compared with other alternatives listed in this thread, I was fine with it.

Yello95

Sil-Glyde is $13.00 for 8 oz....$6.50 for 4 oz....just checked at my NAPA store...

ArmchairArchitect

How about Dupont Teflon Silicone Lubricant: https://www.walmart.com/ip/DuPont-Te...089#about-item

It says "Waterproofs, protects, lubricates and preserves. For use on rubber, plastic, vinyl, leather, metal and wood."

Or Meguiar's M5716 Marine/RV Vinyl & Rubber Cleaner & Protectant which also has UV protection but is not silicon-based:

whalepirot

Started using Honda branded silicone lube after reading owners' zeal from S2000 owners. Rare and expensive.

Now, alternate between it and Maguire's Protectorant for the UV protection. Some swear the silicon will not be absorbed into the rubber.

knewblewkorvette

FX VETTE

Does it work good on the weatherstripping blew?

GCG

I use to condition and protect all the weatherstrip in my C5 and I really like it. No greasy residue like when you use dielectric grease.

MikeWyatt

I tried (this week) Do It Best Hardware "Do it Plumbers Faucet And Valve Grease" - 050035. It is silicone based, and specifically talks about keeping O rings pliable, as well as waterproof. It is far less cost than the GM stuff (that did not work at all for me) at $3 or less for a 1 oz. tube.

I estimate that the tube would do 2 treatments of all door and hatch weather stripping on a coupe. And (in a tube) far easier to use than the 33 Aerospace spray.

So- the jury is still out. But after a couple days it seems quieter.

Allan

I'm neither a designer, engineer, chemist, nor manufacturer of automobiles. I just drive them, by necessity and for pleasure.
Consequently, I rely on the product these people recommend I use to for the best care of my very expensive vehicle.

I would not use an alternate weight engine oil, oil filter, gasoline octane, or inflate the tires to other than the recommended air weight, so I see no reason to deviate from any other recommended product. Yes, I'm fully aware of a built-in product bias.