On Wed, 15 Feb 2017 08:20:23 -0600, Markem
wrote:

SNIPPED

The catalytic converters, are not different from the ones use to make
sulphuric acid, so we eliminate CO, and make acid that eats metal.
No.
Since sulphur has been removed from motor fuel there is no sulphuric
or sulphurous acid produced by current catalytic converter equipped
vehicles, and even standard steel exhausts now outlast the best
systems of 25 years ago - while stainless steel systems should be
virtually life-time systems. (My GM TranSport had well over half a
million KM on the factory system, and it would have likely gone
another 500,000km if the vehicle could have kept up to it.
My current 21 year old Ford Ranger is at 350,000km and the exhaust is
like new, hear in the central Ontario salt-bowl.

I have seen no requirement that sulphur be removed from gasoline in
the US, what requirements are up north in Canada I can not speak to.
But unless you remove all the sulphur you still will get sulphuric
acid.
Well, I guess you haven't looked, have you?

https://www.ec.gc.ca/lcpe-cepa/eng/r...cfm?intReg=223

The Regulations Amending the Sulphur in Gasoline Regulations (the SiGR
Amendments) introduce lower limits on the sulphur content of gasoline,
from an average of 30 mg/kg to 10 mg/kg, in alignment with the United
States Environmental Protection Agency (U.S. EPA) Tier 3 fuel
standards.

For an American source -

https://www.epa.gov/gasoline-standards/gasoline-sulfur
Sulfur is a natural component in crude oil that is present in gasoline
and diesel unless removed. Sulfur in gasoline impairs the
effectiveness of emission control systems and contributes to air
pollution. Reducing the sulfur content in gasoline enables advanced
emission controls and reduces air pollution.

The Tier 2 Gasoline Sulfur program, finalized in 2000, reduced the
sulfur content of gasoline by up to 90 percent, enabling the use of
new emission control technologies in cars and trucks that reduce
harmful air pollution. The Tier 2 program marked the first time EPA
treated vehicles and fuels as a system. The program grew out of a
Clean Air Act requirement that EPA consider the need, feasibility, and
cost-effectiveness of stronger tailpipe emission standards beginning
in 2004. Requirements for use of low-sulfur gasoline enabled use of
advanced emission control systems in cars, pickups, SUVs, and vans
beginning in model year 2004. Vehicles meeting Tier 2 emission
standards are 77 to 95 percent cleaner than earlier models.


Either check your facts or don't bother posting as if you "know"
anything.