Fellas,

Today I bought some GM dielectric silicone grease from my local Chevy dealer for about $9.00 a tube, a small tube at that. It says on the blue and white tube model # 12345579. It's a clear vaseline looking substance. My chevy parts manager told me "most Corvette and Camaro owners use this stuff on their rubber weatherstripping around the t-tops, doors and stuff". He went on to tell me there's some "really expensive conditioning stuff" also. He said it's about $60.00 a tube and it's a conditioner for the seals but he says the dielectric grease would do "the same thing".


Tomorrow I'm gonna pick up an old piece of rubber seal from a junk yard and I will test it out. I will also test 303 aerospace protectant, Mothers blk to blk, Zaino Z-16 rubber and tire dressing and Meguiars' rubber and vinyl protecant.

Whatever product you decide use to do follow up with the 303 as a 100% UV inhibititor!

I want the damn truth on this grease stuff!

Somebody please explain to me how it's the BEST stuff on the planet to apply to your rubber seals/weatherstripping!

Thank you

 

I use Z-16 or 303

 

Silicone grease is generally used in electrical applications. IE: spark plug boots, light bulb bases, etc. You can buy the stuff much cheaper at the usual suspects: Autozone, Pep Boys...

 

Wouldn't putting a grease-like substance on your door weatherstripping leave a noticable residue on the windows and door jam paint?

 

It probably would work, but it's going to be greasy and it is just grease like it says on the tube. Use any kind of grease and it'll do the same thing which is keep it from drying out. A much better choice would be any kind of rubber dressing with silicone in it. Go the the auto parts store and look around, I'm sure they'll have something specifically for rubber.

 

Silicon grease works great on rubber, I use it on door seals, hoses, etc. It is what gm recommends for C5's.

 

I just use a silcone spray (available at any parts store) on a rag and wipe down the rubber. Di-electric grease is for things like plug wires or connectors where you dont want corrosion and it needs to conduct electricity (and ya, its too damn expensive to use on your rubber .
Good Luck.
CoryM