[Diy_efi] Additives

[Bill Washington]

Mike,
	Thank you for taking the time to explain, I understand your friend's anger.
I can't say that I'm totally convinced yet, but you have certainly given me significant food for thought, and I will investigate further.
	By the way, our two cars are Peugeot 505GTI - L Jetronic - now 392,000km, and Peugeot 505GTD Turbo 2.5l turbo diesel - now ~240,000km.
	The GTI has started pinging significantly in the last 2 months (started early December) so the recent discussion on advance/Knock/fuels/etc has also been of great interest.

Best Regards
Bill W



   

>--__--__--
>
>Message: 1
>Date: Mon, 23 Dec 2002 15:26:19
>To: diy_efi at diy-efi.org
From: Mike <erazmus at iinet.net.au>
>Subject: Re: [Diy_efi] Re: Diy_efi digest, Vol 1 #427 - 13 msgs
>Reply-To: diy_efi at diy-efi.org
>
>This was a little while back and my friend was so 'put out'
>after he cooled down and spoke to a lawyer he wanted nothing
>more to do with *any* additive company... If I pressed him
>on this it would open old wounds and I know you would not
>get a relaxed response, there is nothing else you can discern
>from his usage <shrug> He runs a diesel
>engine advisory firm and found other people with anecdotal
>evidence of problems with sludges etc So he was even less
>interested in getting involved with disputes and slanging matches.
>
>The thing is what compelling evidence is there that the
>metal particles *wont* congeal - when it is in their physical
>and chemical nature to do exactly that !  ?
>
>Think about it, Lead and Copper are ionic metallic elements
>that have a predisposition to clump togther and you'd need
>some luck to have them stay separate - especially in say the
>gear type oil pumps, that is more than likely to compress the
>particles togther - with nothing in the non-ionic compounds
>in oil to separate them again !
>
>Also, copper forms a *very* hygroscopic compound with
>nitrates which you will find in blowby gases !
>
>Copper Nitrate is so badly hygroscopic that a dry crystal
>will melt in its own agglomerated fluid - and you want
>that floating around in an engine - no way hose-aye !
>
>Also Copper carbonate is a tad abrasive and that is
>another compound that can easily form from blowby <sigh>
>
>No amount of engine preparation that I've seen will
>instill any degree of comfort for the addition of
>lead or copper particles *especially* when there is
>no compelling evidence of a 'force' or compound to
>keep them from congealing - except the income derived
>from selling them...
>
>The only thing I add/do to my turbo engine is a small
>amount of wynns oil thickener and an oil change each
>3000-4000K with Mobil 1 synthetic, although my engine
>has done some 230,000K or so it doesnt rattle or
>hiccup mechanically and its tuned to give about 170KW
>at the flyhweel...
>
>rgds
>
>mike
>
>
>
>  
>



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