Isothermal padding for undertray or not

boristhespie · Unread post by **boristhespie** » 19 May 2011, 08:36

Found supplier of new undertray and they offer ones fitted with isothermal mats and without. I suspect the matring is to protect agains heat hitting the tray. Thing is costs more.

Is it necessary?

Unread post by **Paul-R** » 19 May 2011, 09:43

There isn't the same heat from a diesel engine as a petrol engine (except around the turbo) so this may not be the real reason. I suspect the padding is there to reduce noise.

Clogzz · Unread post by **Clogzz** » 19 May 2011, 16:58

Not necessary and that supplier is just a snake oil merchant.
A non-genuine tray may not fit easily and there’s not much heat under the engine.
The padding will soak up oil and become heavy, then fall out.

boristhespie · Unread post by **boristhespie** » 19 May 2011, 17:13

I ordered one without. Mistake?

Unread post by **myglaren** » 19 May 2011, 17:15

How much?
I may be needing one to as mine is looking rather sorry for itself.

boristhespie · Unread post by **boristhespie** » 19 May 2011, 18:01

Pm'd you

wright · Unread post by **wright** » 19 May 2011, 20:53

is it a secret how much?

boristhespie · Unread post by **boristhespie** » 19 May 2011, 22:10

Kowalski · Unread post by **Kowalski** » 24 May 2011, 22:44

C5 ? Xantia? 1.9 TDI ? HDI ?

My Xantia which still had its undertray was a 1.9 TD and had foam padding on the insider, the C5 is a 2.0 16v and it's undertray was replaced before my ownership but the undertray fitted has silver foil on the inside...

Unread post by **Rhothgar** » 25 May 2011, 17:46

Kowalski wrote:but the undertray fitted has silver foil on the inside...

How do you think the French warm their croissants in the morning? Microwave?