I have been using Amsoil heavy duty 5W-40 since almost new. I run a UOA not very often so I was surprised at the result this last time. After 5K miles, Blackstone had the phos level at only 700. Does anyone else have a UOA for Amsoil HD for comparison? The truck has 135xxx miles on it. Might have to consider switching brands i guess

Thanks for reading.

 

Just for comparison
Here is my Blackstone Oil Analysis on Valavoline Premium Blue 5w40 at 9163 miles with 69,100 on truck

 

Looks good, so I guess you are happy with the oil. I was using Amsoil because it seem to have less oil residue in the CAC hose prior to switching the CCV box to the 2023+ box.

 

Mine is a 23, so I already have the 23+ box and be honest, I have not had a reason to look in the CAC hose.
I switched to Valvoline during Covid. I was having trouble finding Shell Rotella or Motorcraft and the parts store always seemed to have Valvoline in stock and NAPA has it on sell almost every other month for $25 a gallon. So availability and reasonible price got me to try it. For what its worth, the lable says it's the only oil endorsed by Cummins. Which I suspect means Valvoline wrote Cummins a check for that priviledge. But it's also on Fords approved list.

You can see I've stretched my oil change distance from 8,000 to roughly 10,000 mile intervals and it's still showing good oil analysis. My Oil life monitor still shows I could run 13,000 - 15,000 miles oil changes. But I just can't bring myself to run that far on oil. I grew up doing 3,000 mile oil changes. And 10k is stetching my upbringing. On my 7.3L and 6.0L trucks, I changed oil every 5,000 miles. I even stayed with 5k intervals on my 2011 6.7L but bumped to 6K on on 2015 truck and to 7,500 on my 2017 and 2020 trucks. But with the increase to 15 quarts of oil and positive oil test, I'm slowly working my way up to 10,000 oil changes. So yes, you could say Ive been happy with it as far as an oil choice. I'm sure there are better oils and definitely more expensive oils. But this cost $100 for 4 gallons of oil and another $20-22 for a filter. So basically $125 an oil change every 90 days for me.

 

That is interesting, and a bit underwhelming to hear. I have ran T6 since new and just recently went with the AMSoil HD (not Signature). I can't really get T6 around me for less than MSRP, and even at Walmart prices, the AMSoil HD oil was only $2 gallon more, so I am giving it a try. FWIW, I also installed an Insane Diesel oil bypass when I switched to the AMSoil a couple of weeks ago. I have been changing at every 5k and my goal is to get to 7500 and maybe even 10k on an oil change. I figured between the bypass and AMSoil's claims, that shouldn't be a problem.

I did analysis on mine with every oil change for the first 45k miles, but then I didn't do any analysis on the 50k, 55k, or 60k changes. I am waiting on the one from the 65k change right now, which should be here anytime now... but, looking at the phosphorus levels from my T6 on the older reports, they were all over the place. Anywhere between 755 - 1053 over the previous 6 changes. I am going to be real curious to see what this one shows since it has been a while... I will report back once I get it. But, afterwards, if the AMSoil reports don't look as good as the T6 I can just switch back. Like I said, it isn't really any more expensive than T6, but it is super easy to order. Then again, that Valvoline seems to show a good report too...

Here are my older T6 analysis...

 

The additive packages are great and all but if the wear rates are nice and consistent a few hundred ppm of this or that really isn't going to drastically move the needle IMHO. I have seen VOA and UOAs of ford's branded oil being under the 1000ppm of phosphorus that they have such a mad on for.

 

Those extended regen cycles really keep your fuel dilution levels low... that's awesome...

 

Ford wants the Phosphorous levels to be at 1k ppm for rocker arm protection and for Scamsoil to be at 700 ppm is a red flag.

My plan is to stick with T6 until 500k miles.

 

Looks outstanding...

 

It does, and I hope it continues! I am looking forward to see what my recent oil change shows since I haven't done one in a while. With the changes I have recently made though I will continue to do them for a while again just to keep track of it.

Notice in my report above that I had a couple of analysis on T6 with Phosphorus levels in 700's too, so it's not just the analysis that @Boaterguy stated on AMSoil showing 700's. Also, by the way that boaterguy worded his OP, it sounds like it may have only been recently that the phosphorus levels were in the 700's. What were they in the previous reports? If I had the money it would be interesting to send in a virgin sample of each oil to see how they stack up next to each other.

 

QUOTE=FishOnOne;21740228]Ford wants the Phosphorous levels to be at 1k ppm for rocker arm protection and for Scamsoil to be at 700 ppm is a red flag.

My plan is to stick with T6 until 500k miles.[/QUOTE]

Personally I could never get the math to math for me on Amsoil (or any other $30+ per gallon oil) but a single UOA with a reading of 700ppm is a single data point to me, not quiet a red flag.

There are other UOAs I have seen on their 5w40 with higher phosphorus concentration:



Here is a VOA of the 15w40 from the same series...




That said, I have never seen a material difference in wear rates between high end stuff and what I can get at Napa/Wally World/Tractor Supply etc so I still with the cheaper stuff. But that is just the math for me. Ironically, my father is the exact opposite. Amsoil all the things. I am running T6 5w40 right now cause I use it in everything other than my wife's Sienna.

 

I have to admit I like what I see with the Valvoline. I stated here before that I may switch to a 5w40 from the 10w30 I have been running since new. I'm thinking I will use up the stock of 10w30 I have now and go 5w40 at the end of it.

 

To be fair, AMSoil's HD oil is $29/gallon while T6 is $27/gallon (Walmart), and of course their Signature series is higher, but their HD oil is a direct competition to T6 for essentially the same costs. And I don't take into consideration the Shell Rebates because they have been a complete pain to get them approved, if they get approved at all. Also, if you buy T6 from Auto Zone, O Rielly's or Advanced, they charge full MSRP which is $35/gallon.

I agree about the Valvoline. I have considered that before and it has been in the back of my head. It does seem that the Valvoline may be a better oil than either T6 or AMSoil's HD series.

 

In run a report about every 10K miles. I'll dig some up when i get home for comparison.

 

Really on the rebates? Both mine got approved pretty easily even buying online through TSC. Interesting. Anyways, I am not knocking Amsoil in anyway they do make a great product but off the shelf stuff has typically worked out pretty well for me

Valvoline does blend a good product. Their gas engine oils are molybdenum heavy which the valvetrain in my wife's car seems to appreciate, since I just changed it do their "advanced" full synthetic. I know the Saudi sale does sour it a bit for some, which I can understand.

As previously mentioned, Cummins and valvoline are economically tied at the hip so any corporate Cummins repair facility will carry it. Usually the price is pretty reasonable from what I recall, I used to run VPE 5W40 in my 04.5 CR back in the day at times.

Another option is the Napa house brand diesel oil, it is blended by Valvoline. MSRP is stupid but usually goes on sale a few times a year for mid-20s a gallon. Doesn't mean it is the exact same thing as VPE but I have heard good things.

https://www.napaonline.com/en/p/NOL8...oEXAfRhJfDMTbT


Of course most Napas can get VPE as well, mine has it on special at the moment.