2006-11-06 09:05:25 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
The term is "aluminized". It is done to cut down on rust potential.
2006-11-06 09:08:33 · answer #1 · answered by DR. C 3 · 1⤊ 1⤋
As others have already pointed out the coating is a zinc oxide paint which is sprayed on during the manufacture of the exhaust.This is primarily to prevent rust during transportation and storage,after the exhaust is fitted if it is a section close to the engine the paint will burn off within minutes of the engine being started,but will last a lot longer on cooler parts of the system.
2006-11-06 18:08:50 · answer #2 · answered by plumbob 3 · 1⤊ 1⤋
It acts as a sacrificial anode. It is eaten away rather than the steel.
It is the cooler bits of an exhaust system that rust or are eaten away by condensed exhaust gases. The bits that get really hot seem to last and last. Holes come in silencers first.
They used to fit blocks of zinc to ships to give the same effect.
RoyS
2006-11-07 02:14:12 · answer #3 · answered by Roy S 5 · 0⤊ 1⤋
Dear Sabrine H you have posted alot of car questions on here tonight, are you at college learning motor mechanics, any way i think you will find it is not aluminium but zinc/galvanised metal to try and stop rust.
2006-11-06 17:12:37 · answer #4 · answered by spud 3 · 1⤊ 0⤋
It is not aluminium it is coated with zinc to help stop it from rusting
2006-11-06 17:08:43 · answer #5 · answered by taxed till i die,and then some. 7 · 2⤊ 0⤋
Rust inhibitor
2006-11-06 17:07:10 · answer #6 · answered by trainman996 2 · 1⤊ 1⤋
To Stop it rusting too quickly
2006-11-06 17:53:04 · answer #7 · answered by "Call me Dave" 5 · 1⤊ 1⤋
To look good
2006-11-10 12:15:40 · answer #8 · answered by ? 7 · 0⤊ 0⤋
it sheds heat quicker and is rust proofing.
2006-11-06 17:08:57 · answer #9 · answered by Anonymous · 0⤊ 1⤋
Are you sure it's aluminum. It might be zinc.
2006-11-06 17:08:43 · answer #10 · answered by Lab 7 · 1⤊ 0⤋