Couple of body/seal/paint questions

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spacecad3t
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I ordered some door seals, the drip sill seals, outer door seal. Any recommendations on tools? I have some basic plastic trim tools, but probably not the right tools for this.

Im also going to have the car up on a lift in April, Id like to do some rust preventing under the rockers, wheel well areas. Ive used Por15 on other cars, but also curious if anyone has any recommendations? Eastwood makes a spray encapsulator, someone told me about "Wurth Stone Guard". Any other tips from 944 experience?

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Tom
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Not exactly a tool, but the 3M Weatherstripping Glue is the go-to for any rubber that needs gluing in place. In the old days they only made it in yellow, and it was by far the best, but the black stuff if more forgiving visually. But beware, it will glom onto your hands and fingers like a b-rate horror movie slime monster.

I've used POR 15 on my old Mercedes and think it's awesome. It's like a ceramic shell that bonds to the metal. Highly recommended -- just follow the directions to a T....

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spacecad3t
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Tom wrote: Sun Mar 15, 2026 8:47 pm Not exactly a tool, but the 3M Weatherstripping Glue is the go-to for any rubber that needs gluing in place. In the old days they only made it in yellow, and it was by far the best, but the black stuff if more forgiving visually. But beware, it will glom onto your hands and fingers like a b-rate horror movie slime monster.

I've used POR 15 on my old Mercedes and think it's awesome. It's like a ceramic shell that bonds to the metal. Highly recommended -- just follow the directions to a T....
I have the 3M glue, in yellow, from when I did the sunroof last year. And Por15. So looks like Im pretty set I guess. Thanks Tom!

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spacecad3t
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I had some time and warm weather this week, so I rolled bed liner on my rockers and behind the rear wheels. Should help withstand our evil winters and track debris.
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danmartinic
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I have almost two decades of driving on the salty winter streets of Ontario with no rust (other than exhaust bolts)

I use a Canadian product called Corrosion Free 3000

Apparently it is used by the army

I have throughly applied it maybe four or five times with a oil-spray gun (it's thicker and more like a drip-free gel). I spray it inside the rocker channels through the removable vent grill and underneath esp wheel arches and spare tire area etc

I also regularly touch-up paint behind the wheels and other chips

lI have yet to find rust 🤷‍♂️

Someone once told me daily driving esp on the highway helps dry the bottom so maybe that's it

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spacecad3t
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danmartinic wrote: Sun Mar 22, 2026 2:55 pm I have almost two decades of driving on the salty winter streets of Ontario with no rust (other than exhaust bolts)

I use a Canadian product called Corrosion Free 3000

Apparently it is used by the army

I have throughly applied it maybe four or five times with a oil-spray gun (it's thicker and more like a drip-free gel). I spray it inside the rocker channels through the removable vent grill and underneath esp wheel arches and spare tire area etc

I also regularly touch-up paint behind the wheels and other chips

lI have yet to find rust 🤷‍♂️

Someone once told me daily driving esp on the highway helps dry the bottom so maybe that's it
Thanks for the tip. I've done similar over the years using WD40 dry lube spray, but it doesn't last very long. I'll have to check this stuff out.

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PB Blaster Surface Shield, Fluid Film and Rp-342 Cosmoline are also good at preventing rust.

I personally use Surface Shield on my Tacoma.

https://blasterproducts.com/product/surface-shield/


Cheers
Brian
'88 944 Turbo S / Silber Rosa

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danmartinic
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In 2006 the Canadian Government did a study of both American and Canadian army practices for corrosion control.

Corrosion Free publishes a free copy which includes their markups highlighting their product. Nevertheless, it's an interesting read:

https://corrosionfree.com/wp-content/up ... t-copy.pdf

The study refers to an earlier study (1999) that showed inferior performance of Fluid Film:

"Seven CPCs (i.e., Rust Block, Dura Tech 2000, Dura Tech Plus, Rust Check, Krown T-40,
#900 Rust Proofing Oil, and Fluid Film) were evaluated by QETE. It was found that only
Krown T-40 met all the established property limits"

-Section 4.2

The later Canadian study tested nine products on aluminum wire wrapped around a dissimilar metal bolt including WD40. The Corrosion Free was the best of that bunch (Section 4.3)

Some significant performance differences in these tests among well known brands

The consistent presence of various oil leaks over the years is probably the car's best defense :)

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danmartinic wrote: Mon Mar 23, 2026 7:48 am
The consistent presence of various oil leaks over the years is probably the car's best defense :)
My car benefits from the 'continuously regenerating underbody rustproof coating' "feature". also known as an oil leak. :roll: ;)

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spacecad3t
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Dave W. wrote: Mon Mar 23, 2026 10:19 am
danmartinic wrote: Mon Mar 23, 2026 7:48 am
The consistent presence of various oil leaks over the years is probably the car's best defense :)
My car benefits from the 'continuously regenerating underbody rustproof coating' "feature". also known as an oil leak. :roll: ;)
So does mine :lol: my rear main seal... AKA the "Porsche undercarriage rust prevention system".

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