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Using Slick 50 in yer Harley

Discussion in 'Motorcycle Tech Talk' started by cardboard, Feb 22, 2010.

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  1. cardboard

    cardboard Well-Known Member

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    cardboard, Feb 22, 2010
    #1
  3. cowboy

    cowboy Moderator Staff Member

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    I did'nt know that crap was still around , never have used it in anything , did know ma guy who put in his car engine lasted about 2 weeks after that pluged up the pick-up screen :wtf:
    cowboy, Feb 22, 2010
    #2
  4. cardboard

    cardboard Well-Known Member

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    Was told years ago by a person that worked for a Oil Mfg Co.
    Told me that you should never use synthetic oil in a high milage car.
    You have to flush the motor 1st and then to run semi synthetic oil for a while.
    High milage engines has sludge and stuff build up on the motor.


    And I told this to a dude that worked for me.
    He went to synthetic oil and it stopped his screen on his oil pump up and cost him a motor.

    Synthetic oil not only lubricates, it helps keep yer engine cleaner.
    But there's steps you have to do when putt'n it in something with High milage.
    cardboard, Feb 22, 2010
    #3
  5. chucktx

    chucktx Moderator Staff Member

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    i like using kayro dark........
    chucktx, Feb 22, 2010
    #4
  6. hotroadking

    hotroadking Super Moderator Staff Member

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    The myth about old engines and syn came about as years ago the straight weight oils guys ran in pans, shovels, flatheads etc didn't have detergents, so over time sludge built up of course they had no idea because the engine ran.

    Same thing happens with the old stuff on leaks, you get a cracked base gasket and the sludge fills the entry of the crack and no leaks.

    Then you drop in syn with higher level of detergents and the ability to stay cleaners, longer and clean better, sludge comes out, leaks appear, so you get someone that tells you syn causes leaks, it doesn't, it cleans up the area and the weak point is exposed

    Done a bit of research and there is not any specific formula or method to change, other than, drain and refill. between Syn and dyno...

    Welcome has a ton of articles on this stuff...

    If you are into oil...
    hotroadking, Feb 23, 2010
    #5
  7. sarge7

    sarge7 New Member

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    Years ago when I was into drag racing we used to put a quart of ATF in the engine about a 1000 miles before changing the oil; it kept the sludge cleaned out and we never lost a engine because of it. Most of the time when the engine was taken apart it was sludge free; unless there was something causing a large buildup like bad rings.
    The differnce between air cooled and water cooled engines might change what happens; but now ya know!
    sarge7, Feb 23, 2010
    #6
  8. cardboard

    cardboard Well-Known Member

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    The auto parts store has a engine that you put in yer oil and run it for like 5 minutes let it sit and drain the oil before you put synthetic oil in a high milage motor.
    But for safety you should run some semi synthetic oil for a few oil changes.
    The oil screen can stop up real easy if there's much sludge.
    cardboard, Feb 23, 2010
    #7
  9. hotroadking

    hotroadking Super Moderator Staff Member

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    Thats just not true...

    Think about it, Why would semi syn help, does it clean less, If so then the sludge would
    still be there when the full syn hit the engine.

    If it cleaned better it would still sludge up the pickup...

    Neither of those thoughts the guy told you has any merit.

    The fact is if you have a dirty sludgy old engine, any new detergent oil is going to
    clean that crud out , and if you have a ton of sludge well you are going to fubar anyway whenever you clean it out..

    Even dyno oils with good detergent qualities would cause problems.

    What happens is Syn doesn't loose it's ability to clean as fast as
    dyno, so in 3000 miles the syn is still working like new, where as the
    dynos molecules have deteriorated to a larger degree.

    Theres nothing to putting syn in an engine that causes any
    issues other than if you have a crappy dirty, sludge filled, leaky gasket engine already, it will find those problems.

    Fact is you have a problem, you just don't know about it.

    Like going to a doctor and finding out you have a tumor inside
    that wasn't bothering you but he finds it at a checkup...

    Checkup didn't cause the tumor, nor did the xray or doctor... It was already there...

    Break-in periods, etc. all that stuff is old wives tales...
    hotroadking, Feb 24, 2010
    #8
  10. cardboard

    cardboard Well-Known Member

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    Semi synthetic don't break the sludge away as fast, and when you do oil changed it lets you git it out a little at a time, than all the sludge bredkin loose at one time and stoppin the screen in the oil pump up

    That was the theory on High milage engines.
    And you would be supprised at how many folks don't let their car warm up before they cut it off causing the sludge to build up in the motor.
    cardboard, Feb 24, 2010
    #9
  11. hotroadking

    hotroadking Super Moderator Staff Member

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    still it makes no sense

    If it is breaking down sludge, it's going to get recirculated through the system
    and if it breaks it down slowly, you'd have to run semi for a long time.

    It makes no difference.
    hotroadking, Feb 24, 2010
    #10
  12. cardboard

    cardboard Well-Known Member

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    Run something like Valvoline Durablend, run it 2500 miles and change it.

    Valvoline.com > Products > DuraBlend

    I've seen 2 motors git the oil screen stop up with high milage tryin to convert to full synthetic oil.
    So Yes I'm superstitous.
    cardboard, Feb 24, 2010
    #11
  13. calif

    calif New Member

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    Well How about Diesel Oil 10-40 ( DELLO) High Detergent and Cheeper than Synthetic Ran this in My PU and at 250 thousand mi Tore down and it was clean inside!
    calif, Feb 24, 2010
    #12
  14. cardboard

    cardboard Well-Known Member

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    Dello is good, but I like Rotella T. you can git it in both Dino and semi synthetic.

    I have over 225,000 on my E350 Powerstroke that I cranked in the mornin and didn't cut it off till I went home at nite cause I carried a Dog everywhere with me when I had a business.
    And I have a 99 1/2 F250 with 165,000 on it runnin Rotella T.

    Synthetic cleans engines, valves and lubricates better.
    This has even been proven on a dyno about better lubrication.

    And while were talkin about diesel life, I've seen over 500,000 on Powerstrokes that were talken care of and I know of two cases that they got over 900,000 miles on them.
    cardboard, Feb 24, 2010
    #13
  15. hotroadking

    hotroadking Super Moderator Staff Member

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    rotella can be used in hd's

    The syn will clean like nobodys business.
    hotroadking, Feb 24, 2010
    #14
  16. cardboard

    cardboard Well-Known Member

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    YOu know as bad as everybody bad mouths it.
    I have been runnin Screamin Eagle 20-50 oil in my bike off and on.
    I kinda like it.
    cardboard, Feb 24, 2010
    #15
  17. hotroadking

    hotroadking Super Moderator Staff Member

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    just don't run it in the tranny

    lots of "burnt tranny gears" out there
    running syn3 only...
    hotroadking, Feb 24, 2010
    #16
  18. cardboard

    cardboard Well-Known Member

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    Been runnin it in there.
    How can it be any different than any other 20w50 to run in the tranny.
    cardboard, Feb 24, 2010
    #17
  19. Ramona

    Ramona New Member

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    Not sure what you mean.......sludge builds up after the engine is shut off?
    Ramona, Mar 3, 2010
    #18
  20. cardboard

    cardboard Well-Known Member

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    Sludge builds up from Moisture in the oil.
    cardboard, Mar 3, 2010
    #19
  21. chucktx

    chucktx Moderator Staff Member

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    i thought you were running that hi priced oil in your tranny,,,,the stuff you talked me into buying from you.....redline or whatever it was called......
    chucktx, Mar 3, 2010
    #20
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