Threeweight wrote:
I think the average person who plops $45k down on a new BMW will find a way to live with the hardship of taking their vehicle to the dealer for service every few months. I don't see too many blue haired socialites or country club golfers crawling around under their rigs, service manual in hand, doing their own maintenance on their brand new bimmer.
If the technology actually enters widespread use, you'll likely be able to buy the stuff at your local NAPA. You can buy variants of it at your local agricultural supply store right now.
Clean air rules are a fact of life. Folks are certainly entitled to express their dislike of them. Just a little silly to whine about them as much as some do, when vehicle manufacturers are bringing, cleaner, more efficient, and higher performance diesels to market while still meeting them.
That's exactly the point - with this type of system, only those well enough off to afford a $45K car and able to afford time off work to take it into the dealer every 5000 miles for an oil change will be able to afford a diesel option.
Somehow I doubt that the EPA will allow you the option of refilling the tank on your own, even if this stuff does become available at NAPA. As I said, unless the electronics are sophisticated enough to detect that the tank is filled with urea and not just topped off with tap water, what's to keep the owner from doing just that - avoiding the expense of taking the car to the dealer or having to buy urea in the first place?
The sensors/electronics necessary to tell the difference would add to the build cost, and result in increased price for the buyer or added cost to the OEM or both. Much simpler from the OEM's standpoint to just put in a plain jane level sensor and a tamper-proof sealed tank such that the owner has no choice but to bring it into the dealer for a refill. If they find the seal on the tank has been tampered with, you get your warranty voided and a hefty fine from the EPA at the same time.
Initially, the EPA didn't go along with the idea of urea injection, precisely for the reason I stated - what was to keep the owner from simply blowing off refilling the tank or just filling it with plain water, or finding another way of cheating the system. They wouldn't buy off on it until the OEM's could satisfy them they could design a cheat-proof system such that the owners would be forced to maintain the urea system and comply with EPA regs.
And of late, the direction taken by the OEM's has been toward sealed systems that the owner is unable to check on his own - ie, a sealed cap on the tranny fill tube - and has to take the vehicle into the shop to be checked. I don't find it far-fetched they would go the same direction with a urea system, especially with the added impetus of the EPA breathing down their necks.
Bottom line - I don't see the EPA letting owners operate on the honor system when it comes to refilling the urea tank on their own. Just look on this forum, with the SEGR and ORM - that should answer the question.