Underbody Protection Or Cavity Sealing For A Brand New Car

[albhol]

Underbody protection or cavity sealing for a brand new car ( e.g. Mazda BT 50)

- does this make sense or is the protection through the factory adequately ?

[kartman]

No and going on the number of 20/30/40//50 yearold trucks still going Yes

[albhol]

No and going on the number of 20/30/40//50 yearold trucks still going Yes

OK, this is a reasonable point of view

[sezze]

Rust is nearly anywhere in Thailand never a issue . You see many old old cars with only surface rusting on the dents they got . Since the metal technology is moved further i would expect it will even be less of a problem now .

Differences from rusty cars in the western world is the climate in general . In Thailand you will not find salt on the road for deicing . Also , the day night temp is so that any condensation does not stay long enough to do damage . 3th , since there is no frost , the paint/rust protection stays on better .

[transam]

Rust is nearly anywhere in Thailand never a issue . You see many old old cars with only surface rusting on the dents they got . Since the metal technology is moved further i would expect it will even be less of a problem now .

Differences from rusty cars in the western world is the climate in general . In Thailand you will not find salt on the road for deicing . Also , the day night temp is so that any condensation does not stay long enough to do damage . 3th , since there is no frost , the paint/rust protection stays on better .

I would agree with that, shame the paint on my garden wall railings doesn't act the same.

[Hssl]

I'd only think about it if I lived near the sea

[NanLaew]

I'd only think about it if I lived near the sea

Even then I think it would be a wasted effort. I haven't noticed the older vehicles from Sri Racha round to Rayong being any rustier than the ones I see in Bangkok or up in Isaan. I lived in the US for over 10 years and the cars from northern climes were always rusting faster due to the extremes of temperature, the de-icing materials used on highways;pretty much as sezze has posted in #4. There's a world of difference in the 'salt air' between say Pattaya and Aberdeen. A mate of mine is rebuilding some legacy Kawasaki bikes in the UK and he purchases parts on eBay from central and southern US states, never from the north and northeast since the parts from that area suffer from the same corrosion and pitting as the bits on the bikes in the UK that he wants to replace.

OP should save the money and once a month take the new wheels to a wash station and get the whole thing pressure washed and then drive around for an hour on the open road to get it properly 'blow dried'.

[culicine]

I think the undercoating is useful - the chassis is prone to stones and other debris hitting the surface. Scratches to the bare metal might open up places where rust can set it. It's just a theory as I haven't seen it happen. And how often does one get under their vehicle to check? I get my car done every 6 months with a light coating - looks like tar, not sure what it's called exactly. I think the cost is 300 baht + car washing so it's cheap. Anyway if the OP chooses not to get an undersealer, they should regularly check for any signs of corrosion to be on the safe side.

[mcdiver]

I have done jotun under coat on my new vigo.

cost 4500 bath.

did it because my parking is under the condo building 50 m from jomtien beach with salt sea breeze most of the year