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Discussion Starter · #1 ·
I am just about done putting my new engine from focus power in my foci. Everything went great so far. Just I am reading so many different things about breaking in the motor properly. Seems like synthetic oil is not a good idea for the first 5000 km at least. But what oil should i use?? Just the normal oil weight non synthetic??
Any input is appreciated.
 

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I.S.A.I.K.I.
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Yeah, stick with running a regular petroleum based oil until the freshly built engine breaks in properly. You want all your seals to seat properly. Anytime after the break in period, you can switch to a partial blend or go full synthetic to protect the engine internals better than a conventional oil could.
 

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I.S.A.I.K.I.
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500 miles on a freshly built engine(?) I'm sure someone will come in and correct me if I'm wrong.

5W-30 is what the Ford manual calls for.

As far as oil goes, click on my link at the bottom of my sig and it will take you right to my homepage. The Amsoil part number for quarts of 5W-30 full synthetic is ASLQT-EA .You can place an order there if you would like.
 

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Seems like synthetic oil is not a good idea for the first 5000 km at least. But what oil should i use?? Just the normal oil weight non synthetic??
Any input is appreciated.
This is not true. Synthetic is fine for break-ins. Just be sure to follow the manufacturer break-in oil change durations. Typically sooner than the average change for the first 2 changes, and then you can resume regular service intervals.

This is to remove any debris/metal shavings from the break-in period. There is no reason to wait to put synthetic in the motor. Especially with AMSOIL you will benefit from reduced oil temperatures and better lubricity.

Take a read of the Million Mile Van, used AMSOIL Lubes ever since it left the showroom http://www.amsoil.com/lit/g2578.pdf, you can still see the crosshatch pattern in the cylinder walls after that many miles!

Feel free to contact me if you are interested. There are a few options for oils you may use.

http://lubedealer.com/htperformance/

Cheers,
Brian
 

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The Librarian
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Synthetic is fine for break-ins.
I respectfully disagree.
No, it's not fine for break in.

Synthetic oil is too slippery.
It will actually hamper the break in process before the rings seal completely.

I would use a straight 30 weight dino oil (I.E. Castrol 30 HD) for the intial 20 minute run in and cam break in.
Then drain it, replace filter, and use straight or semi-synthetic 5W30.
Change it at 500 miles, and then again at 1,500 miles.
At the 1,500 mile interval, the engine should be broken in enough to start using full synthetic.

HTPerformance;
BTW, in that "million mile van" example, it never ran synthetic oil till it hit 68,250 miles.
I installed AMSOIL synthetic 0W-30 motor oil in the engine at 68,250 miles
 

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Discussion Starter · #10 ·
Thanks for all the replies, seems like there are many different opinions on this. It seems though what I read so far is in accordance with WD40.
Maybe Tom will come across this thread and give us his take on this, since the motor was built by him.

What is another straight 30 weight dino oil couldn't find the Castrol stuff here?
 

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Discussion Starter · #12 ·
Got the right stuff, found the Castrol 30 HD that WD40 suggested. And got some Castrol non synthetic 5W 30 for the first 500 miles. Thanks to all repliers, and wish me luck starting her up this Friday.
 

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i would break it in with a 5w30 for 500 miles then switch to straight amsoil.i have purchased oil from brian over at htperformance and he seems very knowledgeable about the amsoil.
 

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The recommendation from AMSOIL Technical Service is the following:

In a brand new engine, synthetic oil can be safely used right from the start. We usually recommend running the OEM oil for the first scheduled oil change period, as this serves both as a "flush" to rinse out any manufacturing dust and debris.

If you are breaking in a rebuilt engine, we recommend using a petroleum oil until you are satisfied with the oil consumption level of the engine, as the quality and care used by rebuilders varies greatly.
 
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