LS2k

I've been looking at installing a no drill spoiler but was wondering if the silicone sealant is a must and if it won't be damaging the paint? I"ve seen people using GT 2100 silicon sealant but you can't buy it individually online. I found this one but don't know if it's ok, any insights greatly appreciated.

LS430FL

Where did you find your no drill spoiler? And for what year?

LS2k

It's for an '07 ls460 and i've been looking at spoilers like https://www.darspoilers.com/

roadfrog

This is the first I've heard of using silicon. I used 3M Mounting Tape that came with my spoiler. Almost 3 years and 50k miles later, it's still bonded to the car like the day I installed it. Everyone else I know here that has installed it, used the tape as well. I certainly wouldn't use silicone on paint.

jayclapp

I have a spoiler that was installed on my 2004 LS420 with double backed tape in 2007 and have had no problem whatsoever concerning staying attached.

Chuckinnj

Use the proper tape and it should last forever........ "IF" you ever have to remove the spoiler it can be done "easily" when you use tape instead of using silicone.

LS2k

Glad to hear that silicone sealant is not required, i saw it when watching the Dar spoilers installation video at the 3 minutes mark at

Chuckinnj

I saw that he use a "dab" of silicone on the ends......... I guess it would not hurt using a dab of silicone at the points he put it on however that tape is very strong and you can see him pushing and pulling on the spoiler with wet silicone that has not cured so that shows the tape holds well. The "key thing" on ANY tape installation is prep to makes sure there is no wax on the area where the spoiler goes. Good luck with the installation!

roadfrog

Exactly. My spoiler came with alcohol swabs, but for good measure I used extra with a rag and a bottle of ISOP Alcohol.

Chuckinnj

I always use the 91% Isop Alcohol that can be purchased at any drug store "for cheap".......... And I always wipe the area down three or four times with a clean soft rag dampened with the alcohol. Keep the unused bottle in the shop for future uses such as detailing, cleaning grease stains, adhesive removal, etc.
Once you install the spoiler apply some wax to the area you wiped down around the spoiler....... It may be a good time to do a FULL detail since you have a nice new add on!

RR601

Use any brand as long as 100% silicone. That one on amazon would be good.
I also like the Dar spoiler but went with the bolt on. Easy to do, DAR puts the screws to line up with the access holes on the trunk lid liner. So has the durability and looks of a oem installed spoiler. Still have to drill the two holes in the trunk lid. A little scary to think about but very easy to do and hard to mess up.
No one seems to have a problem with just the 3m tape. I was being picky. Wanted the same install as a oem spoiler.
And did not want even a little worry of the spoiler coming off on the interstate. Cause an accident and the insurance does not cover since an aftermarket item.
When I bought mine, DAR fine print recommend bolt on to cover themselves. But most use stick on and have never had a problem. And I don't think I have ever heard of anything coming off with 3m tape.
Just on other auto's the occasional window vent visor or hood bug shield that use 3m tape. And even that is rare.

LS2k

Thanks for the great feedback, need to do a little more research regarding drill vs. no drill spoiler but will definitely use the 91% Isop Alcohol either way.

Chuckinnj

I "cringe" thinking about drilling holes in my trunk...... Please keep us posted on the progress!

roadfrog

If you think "OEM" means drilled, that's not necessarily so. Many components on cars (body side moldings, etc are fasted with body tape from the factory....even as early as my 88 Mustang 5.0

RR601

I agree a lot of other stuff is attached with the 3m tape. Just in my limited research, I could not find any car manufacturers that install oem rear spoilers without bolts. Even talked to my Lexus body shop.