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| If P0420 is present then: | |
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| Tweet Topic Started: Apr 4 2012, 08:44 PM (5,279 Views) | |
| dayle1960 | Apr 18 2012, 06:49 PM Post #46 |
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Fastest Hampster EVER
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ARGH!!!!! I will now slink back into my cave and reread the wisdom of mwebb. Obviously the elixor that snake oil salesman was peddling on his STUPID youtube feed was exactly what I hoped it wouldn't be, Yep, on the way to work the stupid CEL pop its ugly self on and I get disgruntled. Now here is a question for mwebb: What do you think cause my cat to die? Was is dogschnit oil coating my cat's innards, or has the catalyst burned up? I know on another post mwebb stated that dogschnit oil turns to ash after it is burned and coats the inside of the cat. I guess that is what has happened. From this experience I can state that you will not get any good results from throwing lacquer thinner in your gasoline tank in order to correct a P0420. Thanks for everyones input. Maybe I'll find a way to scrape together a couple of bucks and test a CARB cat or else I'll do the cheapo dayle1960 thing and plug the downstream O2 bung and keep on trucking. |
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| Bad Bent | Apr 18 2012, 09:58 PM Post #47 |
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Facetious Educated Donkey
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Looking through Wikipedia at Other Additives, http://en.wikipedia.org/wiki/Car_oil "Another trend of today represent midSAP (sulfated ash <0,8 wt.-%) and lowSAP (sulfated ash <0,5 wt.-%) engine oil (see specifications: MB 229.xx, MB 22x.x1, Renault RN 0720, FORD WSS-M2C934-A). The ACEA specifications C1 to C4 reflect the midSAP and lowSAP needs of automotive OEMs. Reason for this is that the small loss of the oil during engine life — that ends burned, exhaust valve stem cleanliness is improved and much less gypsum ends up plugging the catalyst and/or particulate filter. This improves emissions as the emission regulating system has longer service life then. It is much more remarkable in a trailer truck which can easily make 200000 to 400000 km every year." www.mobiloil.com/Car_Care/AskMobil/Low_Ash_Oil_Collection Q&A, that there are additives that leave an ash; "There are certain additives used in engine oils that, when they leak past the piston rings and get into the combustion side of the engine, can produce ash when burned. This ash can cause filter plugging in certain types of engines that contain particulate filters. This is not an issue for most engines unless you have a diesel particulate filter." What mwebb may be referring to is: EP additives, like zinc dialkyldithiophosphate (ZDDP) additives and sulfonates, preferably calcium sulfonates, are available to consumers for additional protection under extreme-pressure conditions or in heavy duty performance situations. Calcium sulfonates additives are also added to protect motor oil from oxidative breakdown and to prevent the formation of sludge and varnish deposits. Both were the main basis of additive packages used by lubricant manufacturers up until 1990s when the need for ashless addtitives arose. Main advantage was very low price and wide availability (sulfonates were originally waste byproducts). Currently there are ashless oil lubricants without these additives, which can only fulfill the qualities of the previous generation with more expensive basestock and more expensive organic or organometallic additive compounds. Some new oils are not formulated to provide the level of protection of previous generations to save manufacturing costs. Lately API specifications reflect that http://en.wikipedia.org/wiki/Car_oil |
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| Deleted User | Apr 18 2012, 10:33 PM Post #48 |
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Deleted User
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mwebb is camping out in Bad Bent's basement. Took a while to digest all that BB. "Dogshnit" is a rather un-technical term. The results of improper oil service intervals and the use of "dogshnit oil" can be seen on a daily basis in Geo Glenn's garage. Tours are available from 9 am to 5 pm daily, weekends and holidays by appointment, or just stop by anytime. VW 504.00/507.00 from the VW Dealer also has a C3 rating on the bottle. |
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| mwebb | Apr 18 2012, 11:57 PM Post #49 |
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FOG
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one of the problems with the dogshnit oils is the low quality base stock , the rest of the problems are the low quality additives that are there to attempt to fix the problems of the low quality base stocks and Mobil One fibs , just like all the rest of the oil sellers the info in wikipedia is incomplete and watered down for the masses. a good example is royal purple , whose oils meet zero ACEA specifications it is all marketing hype . much of the "synthetic oil" products are not good oils , read the backs of the bottles , demand the correct ACEA specifications Demand at a minimum (for geo metros ) DEXOS1 specification i use the better ACEA specification oils in my own cars , i never use the dogsnit oils in even my lawnmower not all of the mobil one products meet DEXOS1 and only Mobil 1 0w40 meets ACEA A3 B3- A3 B4 and the VW 502 505 specification there is no mobil one product that i am aware of that meets VW 504 507 the KISS version there is no credible reason to use dogshnit oils , they cost more to use and they are worse for your engine than ACEA A3 B3 A3 B4 oils and the dogshnit oils will kill your cat deader than dog poop , some dogshnit oils will kill it sooner which ones , changes from time to time and does not matter because you should not use dogshnit oils anyway Keep It Simple Stupid KISS just do not use dogshnit oil Edited by mwebb, Apr 19 2012, 12:00 AM.
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| iBLKBRY | Apr 19 2012, 05:34 AM Post #50 |
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| iBLKBRY | Apr 19 2012, 05:35 AM Post #51 |
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Ooops...I meant no.
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| Deleted User | Apr 19 2012, 11:11 AM Post #52 |
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In my mind I knew, but did not say. It is now confirmed. mwebb uses high quality engine oil in his lawn mower. ![]()
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| dayle1960 | Apr 19 2012, 06:43 PM Post #53 |
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Fastest Hampster EVER
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mwebb, you made this statement. I want to know how dogshnit oil is more expensive to use than "alphebet" oil? The shelf price is cheaper for dogshnit oil, so all I can deduce is that the maintenance is cheaper by not having to repair damaged bits and pieces of your engine and exhaust systems. |
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| mwebb | Apr 19 2012, 10:35 PM Post #54 |
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FOG
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simple dogshnit oils cost more than 50% of the correct oils ...the ACEA rated oils and the service interval for the dogshnit oils is pretty universally accepted as 3k miles and for the correct ACEA A3 B3 A3 B4 oils the service intervals are 6k miles at a bare minimum so total cost for oils if using dogshnit oil exceeds the price of the "alphabet " oils every 6k miles if purchased judiciously on sale from auto joke or un advanced auto the filter is free for the regular overtaxed and underpaid mortal serfs . |
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| cody | Apr 22 2012, 08:54 AM Post #55 |
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New Member
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Well.... since I am the King of Kings and immortal and pay no taxes to Caesar.... the sonsofbitches made me pay for the damn filter !!!! |
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| iBLKBRY | Apr 23 2012, 04:48 AM Post #56 |
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Hey, I use fully synthetic Valvoline in mine! Darn thing ought to run forever. |
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| dragnfly | Apr 25 2012, 06:54 PM Post #57 |
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New Member
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I had the service engine light come on , checked with my code reader and p0420 code showed up. I changed the pcv and cleaned out the y hose. After about 60 miles of driving the service engine light has gone out and all looks good. Glad it wasn't the cat. converter. |
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| Johnny Mullet | Apr 25 2012, 07:20 PM Post #58 |
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Fear the Mullet
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I just read all of this. To correct your code, replace the cat. To prevent it in the future, don't use dogschnit parts or oil
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| iBLKBRY | Apr 26 2012, 03:44 AM Post #59 |
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Every once in a while, I get the P0420. I just reset it and drive on. Stupid nuisance. I use 76 gas, or another quality station. Oh well, my gas mileage keeps improving with my driving technique. Getting 52mpgs with a straight-up un-modded '96. Nothing fancy, just well maintained. |
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| Woodie | Apr 26 2012, 04:06 AM Post #60 |
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That was a complete co-incidence, PCV has nothing to do with a 0420. Your cat is borderline and depending upon weather and driving conditions, it will continue to go on and off until it finally fails completely. Same for iBLKBRY, going to come on to stay soon. |
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