!! Keep us posted!!
Changing The Oil
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From: HOUSTON
St. Jude Donor '06 thru '15, '19
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Looking forward to hearing about the power numbers from the new motor.
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Brett Foote
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Joined: May 2001
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From: Guelph, Ontario
If it was a factory fresh engine, yes, but not one that was rebuilt. A rebuild is going to have a few more "contaminents" in it such as dust and cam lube, etc. So you want to do a lot more frequent changes on an engine like that (such as doing the first change after just a day or two, and then the second one a few hundred miles later) So there is no sense in wasting $$$ on expensive synthetic during this process. Running a conventional oil for a couple of weeks is not going to shorten the life of the engine at all anyhow. Just don't go do anything that would elevate the oil temps above 220F for any length of time while you're running the conventional oil.
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,610
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From: Converse TX
That is exactly how I broke in my engine 4 years ago, dyno oil and 3 changes in 200 miles and then to the good stuff
Former Vendor
Joined: Feb 2004
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From: Las Vegas NV
St. Jude Donor '06 & '12
Jerry,
Dont switch to synthetic for at least 2500 miles. With your high tension rings, the synthetic will immediatly stop ALL break in. But the organic oil will continue to allow the rings to seat.
Running regular oil will cost you about 10rwhp on the dyno, but I have seen it a million times. The guy switches to synthetic, then begins complaining he has oil consumption and/or blow by. Alot of times this is because he switches over to a synthetic based oil to soon.
Seriously, as an engine builder, it is not something we EVER reccomend. There is 100 different theories on how to seat the rings. But when it comes to oil use, safe is ALWAYS better.
After about 2500 miles, then, and only then, switch to synthetic.
Our reccomended break-in is as follows:
Dont switch to synthetic for at least 2500 miles. With your high tension rings, the synthetic will immediatly stop ALL break in. But the organic oil will continue to allow the rings to seat.
Running regular oil will cost you about 10rwhp on the dyno, but I have seen it a million times. The guy switches to synthetic, then begins complaining he has oil consumption and/or blow by. Alot of times this is because he switches over to a synthetic based oil to soon.
Seriously, as an engine builder, it is not something we EVER reccomend. There is 100 different theories on how to seat the rings. But when it comes to oil use, safe is ALWAYS better.
After about 2500 miles, then, and only then, switch to synthetic.
Our reccomended break-in is as follows:
- Joe Gibbs Break in oil 10/30 with high ZDDP, and filter for 30 minutes. Then change filter.
- Change oil/Filter again at 2 hours, or 150 miles
- Joe Gibbs break in oil with high ZDDP and new filter for additional 250 miles. Then change oil/filter
- Regular 10/30 and good filter for additional 2000 miles. At 2000 miles, check your oil consumption. if you are fine, then switch to synthetic. If not, run hard to 3000 miles. Then swap to synthetic regardless.
This is our required break in for our customers motors.
OE rings, OE replacements, and alot of the low tension rings have extremely fast break in periods. But the moly steel rings dont break in that easy.
Instructor
Joined: Jul 2003
Posts: 158
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From: Edmond ok
Yes, I actually stay with non synthetic for 5000 miles. I have not owned a new car with synthetic yet, but if I did, I would drain it and put in non synthetic. I just don't trust using synthetic for something as important as break in.
Beary
Beary
Safety Car
Joined: May 2008
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From: Lacombe Louisiana
Ponders how all these Corvettes ever broke in with synthetic oil from the factory...... I would worry more about the dino oil baking and coking from the extreme heat of the turbos more than anything!
Race Director
Joined: May 2001
Posts: 15,324
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From: Guelph, Ontario
It's explained above, the OE rings seat very quickly even with synthetic oil, but with aftermarket high tension rings they need to stay away from synthetic at first for proper break in.