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EliteDubs.Com > Technical > QED Engine Forum (Moderator: bobqzzi) > Using Synthetic Oil for Rebuilt Engine Break-in ?
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Author Topic: Using Synthetic Oil for Rebuilt Engine Break-in ?  (Read 3831 times)
A4Ncar
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« on: January 13, 2008, 11:42:23 PM »
What type of oil should be used for break-in? Synthetic or Conventional? 0W30, 5W30, 10W30 or 10W40?  Any other precautions on first starting a newly rebuilt engine?
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bobqzzi
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« Reply #1 on: January 14, 2008, 12:18:57 PM »
I much prefer conventional 10-30 or 10-40.  If you are running new cams, I suggest a container of General Motors EOS
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« Reply #2 on: January 15, 2008, 12:58:06 AM »
What's the benefit of that additive for the cams bob?

How long should you run the dino oil? and how long should you use the additive?
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bobqzzi
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« Reply #3 on: January 15, 2008, 08:59:44 PM »
The additive is high in zinc which really helps with the sliding friction of the cam/follower interface.  I'd leave it in at least 1000 miles
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KOSTAS4WD
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« Reply #4 on: June 05, 2009, 11:44:37 PM »
Is there any online store which stocks this GM EOS additive??
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Pentosin Motor Oil of Germany
Don®
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« Reply #5 on: June 08, 2009, 06:51:50 PM »
You can also use Lucas TB Zinc Plus for Engine break-in:

http://www.lucasoil.com/products/display_products.sd?iid=82&catid=9&loc=show&headTitle= - Engine Break-In Oil Additive - TB Zinc Plus
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donr@unitronic.ca

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KOSTAS4WD
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« Reply #6 on: June 25, 2009, 10:37:55 PM »
Quote from: bobqzzi on January 14, 2008, 12:18:57 PM
I much prefer conventional 10-30 or 10-40.  If you are running new cams, I suggest a container of General Motors EOS

Bob,

I ordered a container of GM Eos because I just had a new set of Catcams installed + new Je pistons and rings ...
The container's back side has a sticker on it saying this :  "we do not suggest the use of EOS  as an oil additive "
They say it is only for assembly and not to be mixed with engine oil...

What should I do ? Should I use the whole container with 5 liters of Pentosin 15W/40 conventional oil ??? (for break in period)
« Last Edit: June 26, 2009, 11:56:48 PM by KOSTAS4WD » Logged
Pentosin Motor Oil of Germany
KOSTAS4WD
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« Reply #7 on: June 28, 2009, 08:20:38 AM »
Anyone??  Is it safe to use the whole container as an additive in about 5 quarts of engine lubricant ??
I am running a new pair of Cams at the moment...
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Pentosin Motor Oil of Germany
Don®
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« Reply #8 on: June 29, 2009, 11:55:03 AM »
Quote from: KOSTAS4WD on June 28, 2009, 08:20:38 AM
Anyone??  Is it safe to use the whole container as an additive in about 5 quarts of engine lubricant ??
I am running a new pair of Cams at the moment...

It is safe...I think the biggest concern with using Zinc additives is it may cause damage to the Catylitic converter if overfilling.
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donr@unitronic.ca

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KOSTAS4WD
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« Reply #9 on: June 30, 2009, 01:49:47 PM »
Awesome!! My cat. converter's already damaged ... !!! hehe.
I'll just empty the EOS in...to run about 1000 miles!!

Thank you Don, for your helpful reply!!
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Pentosin Motor Oil of Germany
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