>what
>is the difference between "undercoating" and "rust proofing"?
Undercoat attempts to prevent brine that is being splashed up by the
wheels from getting at the underside of the car. Some undercoats are a
tar-like thick layer which stays somewhat flexible at summer
temperatures but is quite brittle when cold
Other undrcoats use a very thick grease-like oil
>Do undercoating with oil do a good job (Oil Guard)?
Products like Oil Guard take a different approach. They use a really
thin oil, it's rather like hydraulic fluid. They drill holes in your
doorsills a squirt it in from above. Their target is an area the
undercoat can't protect, the spot-welded seams where the unit body is
held together. Those areas are very vulnerable to rust because the
layers of metal are so close together there is capillary action to
draw brine up into them, and the spot welding makes the metal
susceptible to rusting. The skinny oils are meant to protect those
seams, but to be really effective they need to be reapplied annually.
>Do they do the
>wheel wells as well when they do only undercoating? Also, what
>product do they use?
Who's they?
>What do you guys suggest for rust proofing? I plan to keep the
>car extra clean and for a long time; so do I need the full rust
>proofing or just the undercoating?
I would say both.
>My other 91 Integra only
>started to develop rust after 8 or 9 year, but I was not keeping
>it as clean as I plan to with this one...
Then plan on pulling up the carpets every spring and getting the salt
that has fallen off your winter boots out of them. That's a main cause
of rusted out floorboards. Also be aware that a lot of rusing can be
going on underneath plastic trim panels. Get a magnet and check to see
how much of what looks like metal isn't!
In winter avoid parking in heated underground garages. Rust doesn't
happen when the car is cold, it happens when temperatures are near
freezing and brine slush is liquid and mobile.
If you really seriously want to stop rust cold, use this stuff
www.por15.com
It's expensive, it's a pain in the a.s to apply and you'll have to put
it on yourself before undercoat is applied, but man does it work!
Elmo P. Shagnasty - 20 Aug 2004 01:58 GMT
> Then plan on pulling up the carpets every spring and getting the salt
> that has fallen off your winter boots out of them. That's a main cause
> of rusted out floorboards.
Why not just a big heavy Weathertech-like mat to prevent the problem in
the first place?
John Ings - 20 Aug 2004 03:04 GMT
>> Then plan on pulling up the carpets every spring and getting the salt
>> that has fallen off your winter boots out of them. That's a main cause
>> of rusted out floorboards.
>
>Why not just a big heavy Weathertech-like mat to prevent the problem in
>the first place?
They're a big help, but they're not perfect. Some slush always seems
to get around the edges, and the car's carpets act like a poultice,
holding the brine against the floorboards long after winter is over.
Something I found curious when brazing a couple of square feet of new
sheet metal into the floorboards of an 87 CRX was that the rust
actually seemed to be worse under the sealant that the factory applies
to the cracks where the floor metal folds down and becomes part of the
doorsills. Neither that sealant or ordinary paint is actually
waterproof. It's just a leetle bit pourous, and that's all brine needs
to get through to the metal.
Frank - 20 Aug 2004 03:28 GMT
>>what
>>is the difference between "undercoating" and "rust proofing"?
[quoted text clipped - 69 lines]
> it on yourself before undercoat is applied, but man does it
> work!
Thanks John for the time you took to answer my questions. Much
appreciated. I only now need to know if the voiding of the
warranty that the service manager told me is true or not.
Tomorrow I am getting at the bottom of this and calling acura
directly.
Frank
Bruno - 20 Aug 2004 12:59 GMT
>Thanks John for the time you took to answer my questions. Much
>appreciated. I only now need to know if the voiding of the
[quoted text clipped - 3 lines]
>
>Frank
Please let us know what Acura has to say. I want to get my car done
too.
BTW, I have a friend with an 10-year old Audi that has been to Krown
every year. The car still looks new.
Also, the manufacturer's warranties are always against "perforation",
which is very unlikely to happen within the warranty timeframes,
except if there is a major defect in the car. I guess that's the whole
point of the warranty, to protect from defects.
--
Nostalgia isn't what it used to be.
Frank - 20 Aug 2004 22:59 GMT
> On Fri, 20 Aug 2004 02:28:20 GMT, "Frank" <NOSPAM@NOSPAM.com>
> waived
[quoted text clipped - 23 lines]
> the whole
> point of the warranty, to protect from defects.
Ok, I called Acura Canada on this and they told me that NO rust
protection system will void the warranty from Acura. However, if
they drill holes and or break something during the process, it is
their problem and the warranty will not apply.
I have also learned a few things about the various products for
rustproofing.
There seems to be 2 types: Waxed-Based and Oil-Based. The
Oil-Based are also divided into two types: the petrolium-based
product and the mineral oil based product. All in all, it seems
that the mineral based products are better on as 1) it does not
warp or affect rubber and bushing and 2) wax can, under certain
situation, trap moisture and make matter worst.
Anyway, the dealership either lied to me or just did not know. I
am now checking around for the various oil-based option. It seems
that, of all places, WalMart has the cheapest offering in this
regards.. However, man, I am not sure if I want a WalMart
teenager drill holes in my car!
Cheers all
Dave M. - 21 Aug 2004 02:28 GMT
"My other 91 Integra only
started to develop rust after 8 or 9 year, but I was not keeping
it as clean as I plan to with this one..."
It's been 13 years more and improvements in body construction might mean at
least 10-15 years before you see rust. I'd avoid any rustproofing products.
Dave M.
> > On Fri, 20 Aug 2004 02:28:20 GMT, "Frank" <NOSPAM@NOSPAM.com>
> > waived
[quoted text clipped - 45 lines]
>
> Cheers all
Harry Cox - 21 Aug 2004 05:32 GMT
>>what
>>is the difference between "undercoating" and "rust proofing"?
[quoted text clipped - 3 lines]
>tar-like thick layer which stays somewhat flexible at summer
>temperatures but is quite brittle when cold
I've heard that undercoat is crap and useless, and can trap brine
between it and the metal. It does help to deaden sound, though.