1996 Volvo 855, NA 2.5L, 5 cyl Amsoil ACD 10w-30

[Pablo]

Vehicle----------1996 Volvo 855, NA 2.5L, 5 cyl
OIL-------------6.5 qt Amsoil ACD 10w-30
oil additive------None
oil filter----------Amsoil EAO41
air filters---------Mann and WIX
miles on oil/filter------10370 (apprx 16 months)
miles on vehicle--112,000+
UOA by Oil Analyzers:
iron-------------------5 (lowest ever in this car - magnet had essentially nothing on it)
chromium-------------0
lead-------------------0
copper----------------2
tin--------------------0
aluminum-------------6 (the same as two previous runs)
nickel-----------------0
silver-----------------0
silicon----------------9 (Highest ever, previous 8,6,1)
boron----------------5
sodium---------------0
magnesium------------26
calcium--------------3785
barium---------------0
phosphorus-----------1180
zinc-------------------1339
molybdenum-----------38 (left over from previous blend fill)
titanium---------------0
vanadium-------------0
potassium------------0
fuel----------------- visc40---------------n/a
visc100--------------9.94 (sheared just a little)
water----------------0
soot/solids----------n/a
coolant--------------NO
change---------------YES
nitr------------------ 9.0
oxid----------------- 9.0
TBN------------------ 8.07

 

[buster]

Great numbers. I forgot this oil existed. This could be a good oil for racing too. This could probably be a two year oil for you with that TBN.

 

[VeeDubb]

Exceptional wear numbers for such a long OCI. The only question I would ask is what are the levels of insolubles and I'm not sure I know how to interpret the numbers from this analysis format.

 

[Pablo]

Yes looks excellent. I had to put my glasses on to make sure the TBN was an 8 instead of a 6. Even though it's bold and clear.

Also - make up oil was about 1.5 qts in 1.3 years. I would have actually used this oil again (a first) but I have so much 15W-40 sitting around that I bought for essentially nothing (2.5 gallon containers!

)

 

[Pablo]

OAI doesn't do solids on gas engines unless you ask. I would say with the low oxidation and low wear, solids aren't an issue.

Also this is the first time I used the EAO on this car.

Pb has been zero the last two runs and the previous lowest Cu reading was 8 ppm.

 

[Tones]

Pablo, looks great. I've been thinking about trying the ATM in my white block.

 

[yota4me]

Great report. Is this OCI with mostly highway miles in pacific NW? Engine ever been cleaned with Auto-RX, Amsoil Engine Flush, etc.? Always used synthetic? I'm on the fence about using diesel motor oil in gas engines.

 

[Pablo]

Never used on the highway during this run. Commute and deliveries only.

No cleaners.

Other than first 10-15K always synthetic.

 

[ConfederateTyrant]

Great report, I bet you could easily get 2 years/18,000 miles out of this oil.

 

[JAG]

Robust oil!

 

[Lonnie]

Pablo, this is an excellent advertisement for Amsoil, much better than a sales pitch. At 9.94 where did it start? Sheared a little, must have been very little considering the mileage. This much may be exactly what you want, the oil is doing it's job by giving up just a little. I have 96 turbo that we are going to start testing on and it will be interesting to see how the turbo compares with your na car.

 

[Cutehumor]

what is the TBN virgin for this oil? TBN 8 after 16 months? is this UOA accurate?

 

[Pablo]

Quote:

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what is the TBN virgin for this oil? TBN 8 after 16 months? is this UOA accurate?

---

Virgin TBN is over 12. I doubted it at first and double checked. It's as accurate as any other UOA, afaik.

 

[Drew99GT]

This is perhaps one of the best reports posted here!

How well could ACD do in cold weather do you think? It actually has cold weather specs better than say, Valvoline 10w-30 conventional.

This may be the beefiest oil you can buy in 30 weight!

 

[yota4me]

Does it get any better than this without a by-pass filter? This has me thinking maybe 100% Amsoil ACD 10w-30 or 3 to 1 ratio of Amsoil ACD to Amsoil HDD 5w-30 with Amsoil EA filter(s) would provide longest OCI with least wear/cost for 5w-30 spec vehicles in FL, especially with towing.

 

[Patman]

Very nice report indeed! Even more impressive when you look at the amount of time this oil was in service for, 16 months! I think you could quite easily go 2 years on this oil in this engine, without a problem.

 

[yota4me]

Quote:

---

This is perhaps one of the best reports posted here!

How well could ACD do in cold weather do you think? It actually has cold weather specs better than say, Valvoline 10w-30 conventional.

This may be the beefiest oil you can buy in 30 weight!

---

Here's how Amsoil ACD compares to Penzoil dino 5w-30:
Penzoil 5w-30= CCS viscosity cP = 5800@ -30*C
Amsoil ACD 10w-30= CCS viscosity cP = 5165@ -25*C
ACD pour point @ 2*C colder (-38*C vs -36*C)
If my math is correct, mixing Amsoil ACD 10w-30 with Amsoil HDD 5w-30, at 3 to 1 ratio, would result in pour point of apprx -42*F.

 

[Steve S]

HDEO!!!

 

[G-MAN]

Since this oil is formulated with no VI imporvers, I don't understand the shear. Two possible explanations, I supposed: Some dilution has taken place from the residual oil that was in there previously. Or the fuel dilution is actually higher than reported.

Comments?

 

[Pablo]

There are a few more explanations. Spec is 10.5 +/- ?, so it could have started at 10.2 - 10.3 or so. Measured at 10 after 16 moths in use. Shear? How about lab error?