When did DEF become required ?

2oldman wrote:

wa8yxm wrote:
Do not know about Cats.. Never researched them to see how much good they do.

I sure know when I'm driving behind an old vehicle without it.

I have a 1964 car with no CAT and no seatbelts that I have owned for 16 yrs..... the good ole days. The automatic windows work without the key and you can change the gears (no column lock).

And, let me say, I can't leave that car running in the garage for 5 seconds without smelling the effects of no CAT (6.25 liter V-8).

MM.

wa8yxm wrote:
Do not know about Cats.. Never researched them to see how much good they do.

I sure know when I'm driving behind an old vehicle without it.

Mr.Mark wrote:
It's funny, I remember when people were going crazy when the catalytic converters came out in 1975..... and fully implemented in '79-'80. Same happened with shoulder seat belts with the buzzers.

Do not know about Cats.. Never researched them to see how much good they do.

Seat belts I do know about.. They not only save lives but in some cases prevent accidents in the first place.. I have sent many troopers to many accidents and in many of them seat belts would have helped and in at least one prevented it completely, 2 people died and a 3rd needed clean underwear in that one (I got to talk to #3, he was in the vehicle BEHIND the two who died).

AIR bags, however, CAUSE INJURY.

Mr.Mark wrote:
Mr. Dave, we bought the first year coach with the particulate filter on the 2007 chassis (2008 coach). We have had zero problems with it. DEF came out in 2010 if I'm not mistaken and our new coach will have it. I'm not concerned. The word on the street is the DEF units get a little better fuel mileage.

We have no smoke come out on heavy hill climbs. The regeneration cycle happens once about every 10,000 miles. There is a light on the dash to tell me the process is starting/happening.

If you want a totally emission-free diesel vehicle, go 2006 or earlier. It's funny, I remember when people were going crazy when the catalytic converters came out in 1975..... and fully implemented in '79-'80. Same happened with shoulder seat belts with the buzzers.

Go with the environmentally friendly units. Save a tree. LOL! (just kidding). Buy and drive what you like, this is America.

A side note: Before catalytic converters, the Los Angeles smog was horrendous. You couldn't see houses off the I-10 Freeway, especially, in San Bernardino, CA. There is still some smog but 95% better. Low emission vehicles are important for our health.
MM.

Yes, I remember going into the gray haze in Los Angeles that was always present down there. However, reduced car emissions was only part of that. Much of that air was cleaned up by closing down almost all manufacturing and sending those jobs to other Countries who now have the dirty air.

BurbMan wrote:
Yes, but having a Prevost towed and the fuel tank drained, dropped, and cleaned, is not going to be cheap either....

Agreed, I hope I never have to find out. But after reading that thread, whether you put gas in a diesel or diesel in a gas unit, mistakes can happen. Since DEF is not required at every fill-up, I think that would make it easier to be extra careful (for me).

But, we don't have a choice when buying new, it's going to have DEF. And, I don't have a problem with the manufacturers making these units run clean as possible, SMOG is not a pretty thing.

Mark

Yes, but having a Prevost towed and the fuel tank drained, dropped, and cleaned, is not going to be cheap either....

BurbMan wrote:
Just don't pour DEF in the fuel tank by accident like this guy did.

I just read all 10 pages of that thread (20 posts per page) and I will definitely be extra careful while putting DEF into the correct filler tube on our new coach. I know on the Prevost, they have moved the diesel and DEF fillers to the same opening so that both can be filled at the truck island. The DEF filler is just on the driver's side whereas the diesel filler is on both sides.

Mistakes can happen and it is apparently very expensive if you start the engine with DEF in the wrong tank. If not started (realizing a mistake was made), just removing the fuel, having the tank cleaned and refill with diesel will not damage the engine.

I have never noticed if the Diesel and DEF nozzles are different sizes to help against a brain burp. I know that the Diesel handles are green and the DEF's are blue.

MM.

I was not in the market for my DP in 2007 until I went to an FMCA rally and attended a forum by the diesel manufacturers - Cummins, Detroit and Cat. As they said, at that time, they could not tell the long term effects of the new pollution-reduction requirements. So I took the plunge and bought my DP in May of 2007, but it had a 2006 Cummins engine. 2007 was the particulate filter requirements and 2010 came stricter requirements that were met by using DEF.

Just don't pour DEF in the fuel tank by accident like this guy did.

I do not believe DEF was ever required. But, the engines had to meet the standards, and DEF is one of the ways it was done.