Chevy SS Forum banner

Sunroof Seal Maintenance

16K views 43 replies 23 participants last post by  s/c'd cav  
#1 ·
Hey All,
I was wondering if anyone had any sunroof seal maintenance practices. I have a sun and surf car (by the coast and never garaged :eek:hmy:) so maintaining the weatherstripping is important.

My sunroof seal has gotten dirty and a bit dry and it exacerbates any creaking sounds from the seal rubbing against the body as the car flexes. I'm gonna hit it with a water and a rag to clean it up then hitting the edges with 303 Aerospace wipes.

Any one else got any recommendations?
 
#3 ·
I'm interested in this too as I plan on retaining the car for a long time.

Not to hijack this but would also like to get a list of seals and part # to order and hoard for use later. Hopefully they can be purchased separately.
 
  • Like
Reactions: RedhotFLSS
#10 ·
Another vote of approval for honda shin-etsu. Used it frequently on my old del sol and s2000 hardtop. little tube lasts a long time
 
#17 ·
when you ask for ideas of what to use why get upset when someone gives you the easiest answer???...sometimes the message you received is not so much snark to you but perhaps meant to encourage everyone else who asks questions that could be answered by looking in the manual first.

glad you guys like the Honda and other stuff...has anyone had an issue with the stuff recommended in the manual?

Bill
 
  • Like
Reactions: 2074
#22 ·
Just ordered the honda shin-etsu on Amazon for $15.95. Thank you very much for the information! I've been trying to figure out the best product to use and all I've come up with is the expensive stuff in the OM and Meguiars vinyl/rubber protectant and I'm not sure about the Meguiars being the best for this....so thanks again!
 
#36 · (Edited)
3634770 - GM/AC Delco Weatherstrip Lubricant, For Weatherstrips, Convertible Top Seal, T-Top Seals, Door Seals - 1 oz.
Only $51.88 per ounce.

Image

photo courtesy Pace Performance website
 
#37 ·
3634770 - GM/AC Delco Weatherstrip Lubricant, For Weatherstrips, Convertible Top Seal, T-Top Seals, Door Seals - 1 oz.
Only $51.88 per ounce.
This appears to be DuPont Krytox synthetic PFPE oil. Probably GPL105 or 104 - different viscosities. My company stocks the GPL105 for aircraft use. Either this or the OEM, not cheap. Data sheet attached.
 

Attachments

  • Like
Reactions: SilverSport
#38 ·
So I've heard.
I've treated 3 different vehicles with my bottle and still have more than half. Stuff lasts forever if you run a clean microfiber over the seals occasionally to remove any contaminants. I've found the cheaper Super Lube is good to freshen up periodically after the krytox.
 
#39 ·
Yes, the stuff is high quality for sure.
 
#40 ·
.....Sunroofs suck....I only did it for the resale....MOST real longtime factory guys will forgo the sunroof/future leak/bind/webasto/leaf-stuck-in-drain-channel-headache....Fact is I don't plan on any resale now that the car is gone...Shoulda never let em cut a hole in my roof... Folks..Buy the expensive GM stuff and apply...No SS roof leaks to report at my location yet, but MUCH damage to report on neglected/untreated CTS "roofs". Those seals shrink and harden without the magic snake-oil. Buy it....Apply it....Carry on...
 
#41 ·
Slightly off topic here, but for weatherstripping maintenance, the Owner's Manual states: "Weatherstrips - Apply Dielectric silicone grease on weatherstrips to make them last longer, seal better, and not stick or squeak. Lubricate weatherstrips at least once a year. Hot, dry climates may require more frequent application. Black marks from rubber material on painted surfaces can be removed by rubbing with a clean cloth."

The silicone grease may be effective in most respects, but it will also accumulate and retain more dirt and contaminants than the PFPE oil. I may be nit-picking here, but the lighter synthetic oil would be the way to go. Money well spent.
 
#43 ·
Update:
All right I used the $14 Honda Shin-Etsu grease last night around the sunroof seals and so far so good. No more creaks when going over bumps or when quartering drive way entries were there is the most opportunity for noticeable body flex.

Pretty happy so far!

Not sure what why the GM stuff costs so much. For $52 its got to either filled with unicorn tears, the gold plating that should have been in the power steering rack connectors, or just simple CYA margin.