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Slick 50

7K views 44 replies 19 participants last post by  SoftailBilly 
#1 ·
Has anyone used Slick 50 in their V Twin ? How did it work out for you ...let me know, I'm considering for my 2015 - 110 Motor
 
#9 ·
Used it in the 70's still have case/s of small engine plus regular. Don't know that I ever saw a improvement over time. Never saw internals of engine using it. Seen lots with and with out good service and good oil. Kinda easy to see difference.
 
#12 ·
A lot of engineering went into a good oil's development. Why mess with it?
 
#28 ·
I used to be a big Slick50 fan. No good reason, I just wanted to think it was a good idea.

What I eventually figured out makes me really glad I don't own those cars any more.

Try a couple of tests.

Use a common well seasoned cast-iron skillet and put a quarter-sized puddle of oil in it, take a spoon and spread it out. with a spatula, you could spread it over the whole bottom of the skillet. That is "oil film" all engine durability depends on "oil film."

Now try that same test with a really good Teflon surface skillet, if you can still find one, (I don't think they are covered with Teflon any more.) But any hi-tech super-slick surface will act the same. The quarter-sized puddle of oil won't spread out into a film, the Teflon coated metal is too slippery to form an oil film.

Teflon additive may be slippery and it may impregnate the metal surfaces, but it cannot take the place of oil film.

Another physical spec to consider is the density, specific gravity of Teflon is 2.1, that means a lot heavier than water. Specific gravity of motor oil is .8, a lot lighter than water. Why does that matter? Because Teflon, even nano-particulate Teflon, tends to settle out of oil, or more importantly it can CENTRIFUGE OUT of oil. Like inside a rotating cam shaft or crankshaft? Theoretically, I don't know why it couldn't eventually clog small rotating passageways.

I have known an engine builder say to try to take a couple of thousandth off the inside of cylinder walls, the Teflon gums up an abrasive surface like a hone, and accumulates on a cutter. I don't know this to be a fact myself.

IMHO, Stay away from snake-oils, some are REALLY detrimental to your engine, REALLY,

I heard of a report by Ford, they said they can't actually prove it, but investigation of catastrophic corrosion in some Power-Stroke engines, that perforated between the oil passageway and the water jackets, CAME FROM THE OIL PASSAGEWAY SIDE, SOMETHING ATE THRU INTO THE COOLANT SIDE.

How is that possible? Some of the magical-slippery additives are SALTS. Salts are not good to put into hot and inevitably moisture contaminated environment.

..
 
#33 ·
I have an oil additive story for ya'

Back when I was 18 I was working at a gas/service station. The Wynn's Friction Proof sales guy came in and was demoing how Wynn's added to oil stopped the galling on his test apparatus. The owner (and mechanic) said he could add something better than that. He went into the back room with some oil and returned a few minutes later. the Wynn's guy tested the oil and it took more pressure in the tester to gall the metal than it took for the Wynn's. What he had done was to pee in the oil. The sulfur in his urine was what gave the results that baffled the Wynn's guy.

True story...............and no, I don't pee in my oil :rofl:
 
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#35 ·
I have an oil additive story for ya'

Back when I was 18 I was working at a gas/service station. The Wynn's Friction Proof sales guy came in and was demoing how Wynn's added to oil stopped the galling on his test apparatus. The owner (and mechanic) said he could add something better than that. He went into the back room with some oil and returned a few minutes later. the Wynn's guy tested the oil and it took more pressure in the tester to gall the metal than it took for the Wynn's. What he had done was to pee in the oil. The sulfur in his urine was what gave the results that baffled the Wynn's guy.

True story...............and no, I don't pee in my oil <img src="http://www.harley-davidsonforums.com/forums/images/smilies/rofl3.gif" border="0" alt="" title="ROFL" class="inlineimg" />
Ok that’s funny sh$$t rite there!!!!
 
#37 ·
Fact; oil manufactures and engine manufactures both say Do not add other additives to the oil. They have very good reasons for the warning, aftermarket additives, can screw up the oil's additive package. Additive packages are designed by chemists and tested for hours and hours before they are released. WHY MESS WITH A PROVEN PACKAGE?
 
#39 ·
Ah, Harley engines do not use the same sort of bearings inside as Car Engines... Harleys also utilize dry sump systems. I can see a whole can of SICK 50 Teflon chunks sitting in the bottom of your oil bag or possibly plugging up oil filters. Best to pour in a very high quality synthetic approved for your HD and enjoy long engine life. Jus Sayin.

Erika DD
 
#40 ·
Harley engines do not use the same sort of bearings inside as Car Engines...
Harleys use roller bearings on the crank, cars use Babbit.

Roller bearings need only the presence of oil, where Babbit bearings need oil pressure.


*The exception on the bearings as far as Harleys go is that the 09 up TCs use Babbit bearings on the cam plate, where prior to that they were roller bearings.

The difference is with Babbit bearings the crank/cam floats on a film of oil, where roller bearings use rollers between a inner and outer race to allow rotational movement.
 
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