Hey guys,

Just recieved my engine oil analysis from Blackstone laboratories. They flagged several items that could be a problem or just a result of the engine swap I performed about a year ago? Take a look and let me know what you think.

 

How long was the oil in the engine? Aftermarket intake/filter?

 

3,225 miles no oil added stock intake and filter.

 

I meant how long as in years, months, days.

 

About 6 months, it's mainly used for camping and local trips to the hardware store. I did add a few brass fittings for an oil gauge. Maybe that's contributing to the copper?

 

Its possible the long block could have sat a bit before you got it and developed some corrosion which your now seeing on the UOA since the engine is in service. Maybe try a slightly higher viscosity oil like a 5w-30 and see if anything changes, should give you better hot protection. I can't really think of anything you can do about about it without tearing the engine down and inspecting it. If it is running good and sounds good I would get another UOA in 3k miles and see how it looks. I take it you are using a Motorcraft 820S filter?

 

Follow up analysis. You're looking for a trend now. "Engine swap a year ago" Was the engine opened or did it have anything done to it then?

 

Yes, using Motorcraft 820C oil filter. I'm planning another analysis on the next change for comparision purposes. Do you think the duration between oil changes had an effect on the readings? Is there any other readings that concern you or look good that might shine a more positive side of the analysis?

 

The longer duration can have some effects on the UOA however 6 months for a quality synthetic oil should not be a problem.

 

A UOA or two in this thread, including one I posted. The UOA I posted was with 34k miles on the engine at that time.

https://www.ford-trucks.com/forums/7...is-report.html

 

Interesting.

Since the bearings are aluminum-silicon, and your silicon reading is three times the average, and aluminum is high too, I would start wondering...

Definitely do another analysis, I'd certainly want to keep an eye on that.

This is interesting: Sources of Elements found in Oil Analysis

Silicon can be in synthetic oils.

I wonder, if you asked Mobil about the analysis, if you'd get an answer?

 

I was checking my records and I only had one oil change before the analysis. I'm wondering with all the work done to the engine if some of the data is caused by the engine work? I guess I can't rule out used engine with more engine wear then I care to admit?! The latest oil change has motorcraft 5w20, we'll see if that changes the results. I'll be sure to post my next analysis. It will probably be about 4-6 months...I don't put many miles on the truck per year.

 

Check BITOG www.bobistheoilguy.com and you will find that Mobil1 UOAs consistantly show high iron levels. No one has come up with a good explanation for this. Tear downs of engines run on Mobil1 show them to be very clean and weel within tolerances though. One thing I've noticed having used Mobil1 in several different Ford modular motors is that there is some oil lost. Switched to Penzoil Platinum and no oil usage at all.