View Poll Results: What Oil Do You Use

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  • Synthetic

    424 87.06%
  • Dino

    40 8.21%
  • Blended dino/synthetic off the shelf

    17 3.49%
  • I mix my own

    6 1.23%
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I'm a Oil Junkie

This is a discussion on I'm a Oil Junkie within the General Help forums, part of the LSx Technical Help Section category; why does any car smoke out the pipes then?...

  1. #361
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    2000 Trans Am WS6 A4

    why does any car smoke out the pipes then?

  2. #362
    no cats,older cats,pussy cats lol

  3. #363
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    2000 Trans Am WS6 A4

    haha... so if you have pussy-cats, you will blow smoke?

  4. #364
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Still breaking in the 402 on AutoZone $1.00 a quart dino.

  5. #365
    02 Silver T/A-6 spd Waynestep's Avatar
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    2002 Firebird T/A - WS6

    I have read most of this thread - for the education as Sarge says - and I think I want to go the AMSOIL 0W-30 way - I have a local dealer. But I read earlier that someone has piston slap - (which I also have in my T/A)- and it got worse after they put in the AMSOIL.
    So, is it a waste of effort and $$$ to try and stop the piston slap? I don't know if I should go synthetic if it makes no difference in the slap. I read that piston slap will ultimately reduce the life of the engine, so I think it's best to try and reduce it. And sometimes I hear the piston slap real loud- and other times hardly or not at all.

    What AMSOIL would I use to stop or reduce the piston slap?

    oh- and thanks Sarge- your info is tremendous.

  6. #366
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    2000 Trans Am WS6 A4

    how would you describe the piston slap? and does it only do it when it's warming up?

  7. #367
    02 Silver T/A-6 spd Waynestep's Avatar
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    2002 Firebird T/A - WS6

    Yes- only when warming up- just like it is explained here in the forum and on that piston slap website mentioned in the discussions. After a minute or two it's gone- but it sounds like a diesel sometimes- and some times it doesn't do it at all. Strange.

  8. #368
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    2002 Pontiac T/A Firehawk

    My car has this noise also and has had it since day one. I work at a GM(Cadillac) dealership and have not once seen an engine damaged due to piston slap. As far as I know only oil that is too thick will reduce piston slap(straight 40 or 50wt), I use Amsoil 0w-30 and it seemed to quiet it some, but it is still there loud and clear but seems to go away sooner.

  9. #369
    The Bandit Wesman's Avatar
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    1998 Trans Am WS6

    Mobil 1 Full Synthetic.

    Synthetic is the only way to go

  10. #370
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    bah, I hardly hear anything when my car is warming up... it's louder overall... but so is every other cold motor in the world....

    is it because we have an aluminum block and it's changing shape while heating up?

  11. #371
    Member myk02k's Avatar
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    2002 Camaro Z28 6-spd

    Yup. My guess is the iron pistons/aluminum block combination doesn't mix too well in cold temps. We already know that iron has a much higher density than aluminum, but haven't you ever heard of the grave mistake of wiring houses with aluminum during wartime? My childhood house needed a complete re-wiring, we had plenty of fires from the outlets, and there were a few instances that the same models of houses on our block would have a massive fire. All the contracting/compression of aluminum made it a free wire after a while.

  12. #372
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    2001 Z28

    I use Bllackstone Labs to do an oil analysis every 5000 miles. I have been trying Mobil 1, Royal Purple, and Penzoil Platinum. Mobil 1 has been showing the least wear.

  13. #373
    Senior Member 02z28ls1's Avatar
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    2002 Z-28 Camaro M6

    Mobil One is my choice-it was the first synthetic on the market, they've been at it longer than everyone else.
    Aluminum engines are built looser because of the greater expansion rate of aluminum. When the engine warms up the tolerances are as tight as any other engine. As a result of this oil consumption can be worse than some people like. I'm not worried about a little extra oil consumption, not when I know the reason behind it.
    There is no connection between aluminum wiring in houses and engine design. And it's debateable about the aluminum wiring being a safety hazard-IF the house was wired correctly in the first place.
    Piston slap is the result of the short piston skirts of a performance piston as well as the looser tolerances. It keeps the weight of the piston down to eliminate the long skirts that are used on a lot of OEM pistons. That's why the LS engines rev up so fast, less rotating mass. People freak out on a little noise so you get stuff like heavy pistons and reduced performance for a lot of cars. Piston slap has NEVER been shown to reduce the life of the engine.

  14. #374
    Grand Imperial Wizard Sarge's Avatar
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    Quote Originally Posted by Waynestep View Post
    I have read most of this thread - for the education as Sarge says - and I think I want to go the AMSOIL 0W-30 way - I have a local dealer. But I read earlier that someone has piston slap - (which I also have in my T/A)- and it got worse after they put in the AMSOIL.
    So, is it a waste of effort and $$$ to try and stop the piston slap? I don't know if I should go synthetic if it makes no difference in the slap. I read that piston slap will ultimately reduce the life of the engine, so I think it's best to try and reduce it. And sometimes I hear the piston slap real loud- and other times hardly or not at all.

    What AMSOIL would I use to stop or reduce the piston slap?

    oh- and thanks Sarge- your info is tremendous.
    Piston slap isnt caused by oil but the piston skirts being too damn short and bangining around in the cylinders.....I fixed my piston slap by dropping a iron block 402 Stroker motor in with Mahle pistons Seriously...Amsoil 5-40 European,Red Line 10-40 or Royal Purple Racing 41 all have superior film strength....Castrol GTX 10-40 is also excellent for 5K oil change intervals....

  15. #375
    We'll be back... GatorSS's Avatar
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    Quote Originally Posted by myk02k View Post
    Yup. My guess is the iron pistons/aluminum block combination doesn't mix too well in cold temps. We already know that iron has a much higher density than aluminum, but haven't you ever heard of the grave mistake of wiring houses with aluminum during wartime? My childhood house needed a complete re-wiring, we had plenty of fires from the outlets, and there were a few instances that the same models of houses on our block would have a massive fire. All the contracting/compression of aluminum made it a free wire after a while.
    If you think aluminum wire is bad, then try and wire your house with iron wire.

  16. #376
    We'll be back... GatorSS's Avatar
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    Quote Originally Posted by 02z28ls1 View Post
    Mobil One is my choice-it was the first synthetic on the market, they've been at it longer than everyone else. ...
    I thought Amsoil was the first synthetic... Er, uh, I guess it depends on how you define 'synthetic'...

    ...oh, never mind, let me get back to my medication

  17. #377
    We'll be back... GatorSS's Avatar
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    Quote Originally Posted by Sarge View Post
    Piston slap isnt caused by oil but the piston skirts being too damn short ......
    Yup, I agree, those "skirts being too damn short" caused so many to get slapped. I said, "Your Honor, I couldn't help it, that booty looked so good under that little short skirt, I just had to grab it. Honest. That's when she slapped the fun right off my face."

    Uh, I know, but I have a prescription for this. Great stuff, I'm finally feeling no pain, but it makes me feel real . Now, what was I saying....?

  18. #378
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    2002 Z28

    10/40

    Sarge
    I have read most all of this post and have decide to run full syn in my newly acquired 02 Z28 and also in my new DOD 5.3 trail Blazer. I must be in geographical Oddity where I currently reside. I was unable to find an Amisoil dealer within 100 miles. Well I ran out of time so I decided to go with the Castrol Syntec 10/40 with an AC Delco filter. Do you think this oil is too thick? I do remember you saying that it was thicker than the amsoil that you recommend. I will say its hot here we haven’t seen a day time temp below 90 for weeks. Man did it make a huge difference in both of my LSX's more notably in my Z28, but the cold piston slap is more noticable. Aside from the cold slap issue The car runs much smother and I swear it seems to run better. The thing that really bothers me is that tiny play school filter that GM recommends. I know on my dally driver my 93z that it calls for a PF454 but I use the PF1218 that is double the size. I can remember about 5 years ago when they decide to down size that filter. Can any one tell me is there a larger filter in AC Delco that will fit our cars???
    Last edited by brantsz; 07-06-2006 at 10:14 PM.

  19. #379
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    '02 blue, '85 black&gold
    02 Firehawk #723,85 T/A

    Mobil 1. Tore down my 305 @ 100k mi. and the crank surfaces looked beautiful! (block froze) LS1 gets only 5w30 M1. Synthetic Rotella in the Duramax.

  20. #380
    Grand Imperial Wizard Sarge's Avatar
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    Quote Originally Posted by brantsz View Post
    Sarge
    I have read most all of this post and have decide to run full syn in my newly acquired 02 Z28 and also in my new DOD 5.3 trail Blazer. I must be in geographical Oddity where I currently reside. I was unable to find an Amisoil dealer within 100 miles. Well I ran out of time so I decided to go with the Castrol Syntec 10/40 with an AC Delco filter. Do you think this oil is too thick? I do remember you saying that it was thicker than the amsoil that you recommend. I will say its hot here we haven’t seen a day time temp below 90 for weeks. Man did it make a huge difference in both of my LSX's more notably in my Z28, but the cold piston slap is more noticable. Aside from the cold slap issue The car runs much smother and I swear it seems to run better. The thing that really bothers me is that tiny play school filter that GM recommends. I know on my dally driver my 93z that it calls for a PF454 but I use the PF1218 that is double the size. I can remember about 5 years ago when they decide to down size that filter. Can any one tell me is there a larger filter in AC Delco that will fit our cars???
    Castrol 10-40 is just fine......as for the filters...yup...I run dual filters on all my cars/trucks..... cheap/add oil to the sump and great results...
    you can relocate your filter very easy and run "fullsize" filters...
    http://www.jegs.com/webapp/wcs/store...tegoryId=14813

    And by the way...you have to order from Amsoil LOL www.amsoil.com
    But Castrol is fine oil.....
    Last edited by Sarge; 07-10-2006 at 10:39 AM.

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