Amsoil 5W-20 XL - 3780 miles - 02' F150 4X4 5.4L

[phillyFX4]

49K total miles on F150. Oil in use 5 months, ALL city driving, added about 1 1/2 qts. during oci.
Changed to Eao oil filter. Fuel was an issue last report, not now.....I changed the pcv, fuel filter and air filter after seeing 11/06 report.

11/06 report, same oil, MC oil filter.

--------------------11/06----------**4/07**

iron------------------15--------------10
copper-----------------4---------------3
tin--------------------0---------------0
lead-------------------0---------------0
chromium---------------2---------------1
nickel-----------------1---------------1
aluminum---------------4---------------5
titanium---------------0---------------0
silver-----------------0---------------0
calcium--------------2918------------2218
magnesium-------------18--------------16
zinc------------------986------------1013
phosphorous-----------761-------------806
barium-----------------4---------------0
moly-------------------7--------------54
antimony---------------0---------------0
silicon---------------19--------------21
sodium----------------25--------------14
boron-----------------20--------------213
potassium--------------0---------------0
vanadium---------------0---------------0
Visc.---(40c)55.5 (100c)10.4-----(40c)41. (100c)7.7
TAN-------------------1.5-------------2.1
flashpoint------------335-------------405
oxidation--------------69--------------21
nitration--------------13--------------11
water(kf-ppm)---------678-------------1008
TBN-------------------6.3--------------3.3
fuel-----------------2.29-------------0.15
soot-------------------0----------------0
glycol/cool.-----------0----------------0
Vndx------------------180--------------160
sulf. byproduct--------58---------------25

Would anyone go to 5w30 for the summer?

Hit me.

 

[ekpolk]

What's with the wildly different hot viscosities between the two reports. That was the same oil in the 2006 UOA, right? If so, that would seem most counter-intuitive. Very high fuel in that one, and your 20 wt Amsoil has transmogrified into a 30 wt; this time, almost no fuel, and you're well below 8 cSt? Lab error maybe, or something I just don't get (or am missing...).

Giving it some more thought, I wonder if there was a formulation change in the XL product. Look at the Ca, Zinc, and Moly -- they're all substantially different.

 

[Pablo]

What's with all the Na?

 

[phillyFX4]

Quote:

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What's with the wildly different hot viscosities between the two reports. That was the same oil in the 2006 UOA, right? If so, that would seem most counter-intuitive. Very high fuel in that one, and your 20 wt Amsoil has transmogrified into a 30 wt; this time, almost no fuel, and you're well below 8 cSt? Lab error maybe, or something I just don't get (or am missing...).

Giving it some more thought, I wonder if there was a formulation change in the XL product. Look at the Ca, Zinc, and Moly -- they're all substantially different.

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Yes, same oil - Amsoil 5W-20 XL.....different filter, MC 802s last year, Eao filter this time.

 

[phillyFX4]

Quote:

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What's with all the Na?

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I surf fish alot

, and as I posted, this oci is ALL CITY driving, ALL 5 months

thanks for the opinions

 

[Pablo]

Surf fishing = NaCL in the mist.....

For a V8 with all city and runs to the beach, the numbers came down. Not a bad report - you could go 6 months.

 

[buster]

Not bad. The latest version of the XL series use the same additive chemistry as the ASL/ATM. (250ppm of boron and 60ppm of Moly). Approximates.

 

[98LSC32V]

So the only difference between the ASL/ATM/ASM and the XL line is just the basestocks now?

 

[buster]

Quote:

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So the only difference between the ASL/ATM/ASM and the XL line is just the basestocks now?

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Well, I wouldn't go that far only bc you don't always see everything via spectrographic analysis. I will say that they are VERY close and have never been as close in the past in terms of sharing the same additive chemistry. Thats just based on my observation of the UOA's I've seen here since Amsoil went SM. The irony here IMO, is that the API SM spec made Amsoil a better oil.

 

[Steve S]

You would be better off using a off the shelf oil with your oil change intervals.