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Location:
Sydney
Registered:
January 2004
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Location:
Wollongong
Registered:
May 2002
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Location:
Brisbane
Registered:
February 2003
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 01:49
 
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those kinds of additives are a PITA if/when it comes engine rebuild time.
they coat everything with this bloody-hard-to-remove shite so you have to acid dip everything - which you don't want to do to alloy parts ;(
sure... use that crud to keep you 25yr-old cast-iron engined cortina using a bit less oil while you rebuild the 'rolla ...
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Location:
Sydney
Registered:
January 2004
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 02:08
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So they must do something? Are you talking about PTFE ones chuckster? Or are you talking about stop smoke wynns (thickening products)...
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Location:
Brisbane
Registered:
February 2003
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 04:15
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i know the nulon (PFTE) ones make rebuilding a tad difficult (first hand experience). But most of those additive do the same thing - leave a friction modifer coating on wearing surfaces.
it's also a great way to completely stuff up a band new engine - add nulon with the running-in oil and the rings never bed in or seal properly - it starts blowing smoke soon after and rings evntually fail from being gunged up in the ring-lands.
if you're worried about an older engine blowing smoke, go to a thicker oil (i used h/d diesel engine oil in my old RA23/18R to keep the fuked engine up with oil pressure). if you've got a performance engine and your changing oil every 5k then the benefit of the oil extenders ((e.g. nulon et al) isn't provided as they only really help in when the oil's old & rooted. Prior to that, all they do is quiet noisy tappets down (slightly) and mask the signs of engine degradation.
regarding rings- you want them to keep wearing against the bore, otherwise they glaze up (oil burnt onto wear surfaces) and they don't cut away crap on the bore so they don't seal correctly. If the honing marks on the bore are covered up wit hslick shit like telfon, the wear & sealing properties of the ring material are lost or not used.
If you really want to use additives, stick to wynns injector cleaner - it's also great fun if your most hated neighbors are having a bbq/family thing at the time of application so you can add some atmosphere (and foul smelling smoke) to their occaision. 
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Location:
Sydney
Registered:
January 2004
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 05:12
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Thanks chuckster - that makes a lot of sense, never looked at it that way. Some people really believe in the stuff. You don't think that extra coating would be good for old cars that show signs of ring wear? Doesn't sound like you do 
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 05:24
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it is my understanding that Dupont, the makers of Teflon (tm) distance themselves significantly from any claims made by the 'additive companies'
it is also of note that if these treatments are so good, oil companies would include them in their formulas.
teflon in oil = not good...
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Location:
Brisbane
Registered:
February 2003
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Re: Studies on Slick 50 (or others)??
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Sun, 21 March 2004 06:41
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| HighRolla wrote on Sun, 21 March 2004 15:12 |
<snip>You don't think that extra coating would be good for old cars that show signs of ring wear? Doesn't sound like you do
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LOL...
actually, i had to take the green car (RA23) off the road when it go so bad that an oil change was lasting about 1000k before it turned to black, sticky, revolting sludge... i don't think any additive would have helped ...
a mate at work had a big cleanout under his house and found drum of h/d oil he had bought for his old 'cruiser so he gave the whole drum to me in return for helping doing some gardening...
i think the minimising ring wear claim is deceptive - using the additives tends to mask excessive ring & bore wear - so by the time you notice it, the poor thing is so flogged out you can't rebuild without custom pistons...
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Studies on Slick 50 (or others)??
