Trop Artic 5W-30, 5KOCI, 2006 Expeditition, 125K

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860
Location
SD - South Dakota
Open to comment, most of the numbers are still greek to me as to interpretation. The Miles on this OCI were predominately high speed interstate driving. Made about 3 or 4 (lost count) 1,000 mile interstate trips on this OCI. Really, not the most representative sample. one note, I've switched from 5w20 to 5w30 and my oil consumption was cut in half. with 5w20 I consistently have to add 1qt/2,000 miles. with the 5w30, I was adding less than 1qt/4,000 miles. it appears that the 5w30 is fine in this motor, despite 5w20 being the spec. but as I said, I'm open to comment if someone sees it differently. it appears that, for my use, 5-6k oci is fairly conservative. a Motorcraft filter was used for both OCI's. Giving the code thing a try here:
Code:
OIL             Trop 5w30	NAPA 5w20
		Artic	 	Synthetic
		SynBlend

MILES IN USE    4,989     	6,447     
MILES           125,086   	114,429   
SAMPLE TAKEN    10/23/14 	06/01/14  

   
Metals (ppm)   
IRON            10       	45       
CHROMIUM        <1        	<1     
LEAD            <1       	<1       
COPPER          1       	2       
TIN             <1        	<1        
ALUMINUM        4       	22     
NICKEL          <1        	<1        
SILVER          <1        	<1      
TITANIUM        <1       	<1       
VANADIUM

Contaminants (ppm)
SILICON         8        	10
SODIUM          17       	278       
POTASSIUM       <5       	6      

Additives (ppm)
MAGNESIUM       14      	118
CALCIUM         2044     	1792     
BARIUM          <1        	<1
PHOSPHORUS      690      	627      
ZINC            761		730     
MOLYBDENUM      15        	6       
BORON           70        	9       

Contaminants
WATER           <0.05        	<0.05
Coolant		No		No

Physical Tests
Visc (cSt 100C)	8.9		9.0 
 
TBN (mgKOH/g)	2.6		2.5
 

meborder

Thread starter
Messages
860
Location
SD - South Dakota
Not stated above, the napa synthetic got me through the coldest winter I can remember. many unaided cold starts at -20°F and lots of idle time to warm up before heading off to work and back. Also had a 1,000 mile trip towing a trailer on that OCI. The trop artic was all summer use, no idle time, and long interstate trips. the use of the vehicle was vastly different between the two OCI's.
 
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1,238
Location
upstate NY
Originally Posted By: meborder
Not stated above, the napa synthetic got me through the coldest winter I can remember. many unaided cold starts at -20°F and lots of idle time to warm up before heading off to work and back. Also had a 1,000 mile trip towing a trailer on that OCI. The trop artic was all summer use, no idle time, and long interstate trips. the use of the vehicle was vastly different between the two OCI's.
You can sure see the difference between the two vastly different uses. I can only say I'm a little surprised that the TBN is that low, given it's usage. It would probably be good for another few thousand miles in continued highway/warm weather use, but warm weather is gone for the next six months. Looks great regardless!
 
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1,238
Location
upstate NY
Originally Posted By: meborder
did the trop artic shear slightly out of spec for a 30wt? I can't find the new table that includes the spec for the 16wt.
Yeah a little but it seems most oils do. They shear down a good bit and then if left in long enough, they thicken back into grade from oxidation. I don't remember the new tables myself.
 
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1,238
Location
upstate NY
@ meborder - I think the minimum viscosity for 30 grades is still 9.3 I believe it was the 20 grade that changed with the addition of 16 grade. I thought more about it while driving and that's all I could recall. I think shannow has mentioned 20 grades are now minimum 6.9 (?) I also think SAE J300 is what you would use in a search. Someone please straighten me out if I'm wrong.
 

meborder

Thread starter
Messages
860
Location
SD - South Dakota
thanks dusty! i'll check that out here tonight. same as you, i was thinking about it more on the way home, and if memory serves the new spec tightened up the 20 spec to be more in line with the 30 and 40wt specs as far as bandwidth. another question for the group. given the above information, would you say this motor is: A- relatively healthy B- ailing in some way C- borderline between the two i have little to no frame of reference other than the UOA on our subaru which showed much less metals.
 
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8,136
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Mahzurrah!
Excellent UOA. I have a bunch of Trop Artic and ran it last winter, very satisfied. A little more shear than I'd like to see in a 5w30 but for a budget oil thats a fairly long run too. Nice report! Thanks for posting.
 
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512
Location
USA
The engine looks fine for 50,000 miles. Since you have better than twice that many miles on it you should be very happy.
 

meborder

Thread starter
Messages
860
Location
SD - South Dakota
thanks for the vote of confidence. i bought it last december from a local used lot and don't really know anything about its past. I had to spend some money on it up front, but nothing since summer began. So the last 15k have been trouble free, so to say. One other question, is it safe to assume that this motor is happy with the 5w30? I was thinking that this UOA was a waste of money because of how quickly i put the miles on, but then i remembered that is why i wanted to do it. the 5w30 really made a difference in timing chain noise and oil consumption, so i'd like stay with it.
 
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5,435
Location
KC
Originally Posted By: meborder
100% positive. i did notice the discrepancy, though. but i am very sure of what went in that OCI.
That would indicate some significant thickening. Not good for that oil. good thing you switched.
 

meborder

Thread starter
Messages
860
Location
SD - South Dakota
curious, to me, as i am still learning.... if an increase in viscosity would be an indication of oxidation, wouldn't the TBN be "low" i realize there is some debate over TBN, and how low is too low. but going with Blackstone's theory that 1.0 is low, there should still be some reserve in this oil to resist oxidation, right? or maybe i got the relationship between oxidation and TBN wrong? this also assumes that it was actually 5w20 that was in the bottle, but i know for sure that the bottles said 5w20.
 
Messages
1,238
Location
upstate NY
To answer your question from a few posts back...by all means you can run 5w30 as you just did. If it's consuming less, that's great. If it's quieter that's a bonus. The oxidation in your previous oil (napa) is normal and has to do with the base oil. The more time it's exposed to heat and oxygen the more it will thicken. Some oils do better than others but I ran QSUD 5w20 last year for 9 months and 6,700 miles. At 3k miles it had sheared down to 8.1 cSt and by the time I drained it, it had thickened to 8.9 cSt. The tbn relates to acid neutralization by way of the additives. Blackstone says you're good down to 1.0 but other labs will flag tbn at much higher numbers. Sorry if I'm not coherent...I'm falling asleep now. sleep
 
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5,435
Location
KC
many on this site think you judge an oil condition by TBN/TAN. Really, oxidation, nitration, sulfation, viscosity and flash point should be the areas of focus. TBN/TAN is good info but not the most important.
 
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1,314
Location
Alaska
With your cold temps in the winter and a 30 wt slowing consumption, I think I would try a 0w30 to leave year round. If a UOA or two comes back ok, then just leaving it.
 
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