Cat Converter starting to fail ~59,000 miles

[jewc75]

Yes it is. All diesel sold in the US is ULSD no matter if it's taxed or not.

Just because the US has required it since 2014 doesn't mean it happens. This is my field of expertise and trust me down here there is red diesel that isn't low sulphur. But hey keep believing everything the government wants you to believe.

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[Davidwnuc]

Just going to leave this tight here…

https://hackaday.com/2022/08/04/reduced-sulfur-emissions-could-cause-climate-shock/

You are welcome. Lol

 

[Davidwnuc]

No smells after switching back to 93. The truck was fed 93 its whole life till the last month or so I tried 87 for a while because I put on insane miles. The 5.0 just does not like 87 octane period if you run her hard. Back to 93 and no smells or stutters.

Good to hear.

 

[JumboJVT]

Just because the US has required it since 2014 doesn't mean it happens. This is my field of expertise and trust me down here there is red diesel that isn't low sulphur. But hey keep believing everything the government wants you to believe.

May be so, but the reason you're in trouble with the off-road is the highway tax, not the sulphur content. Otherwise, anyone running off-road, for anything, would be in trouble...assuming the cops enforce the laws the govenment enacts.

 

[Aonarch]

Just because the US has required it since 2014 doesn't mean it happens. This is my field of expertise and trust me down here there is red diesel that isn't low sulphur. But hey keep believing everything the government wants you to believe.

Agreed. There is farm equipment diesel that is not ULSD.

Guys will fill up their transfer tanks in the pickup beds, as if they are doing so to fill up farm equipment, then they will get home and just fill up their truck tank instead. Gov't hates that.

OP,

Run a few tanks of a Top Tier 91/93 and see if the smell goes away.

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