Castrol Syntec 5W-50

[Sin City]

Here is a VOA of Castrol Syntec 5W-50 from another forum. The date this sample was received by the lab is November 14, 2002.

code:

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Castrol Syntec 5W-50



Vis. SUS @ 212 F 88.9

TBN 10.7

Insolubles Nil

Water Nil

Dilution Nil

Iron 0.9

Silver 0.0

Aluminum 1.7

Chromium 0.2

Copper 0.2

Magnesium 14.5

Sodium 2.1

Nickel 0.0

Lead 0.1

Silicon 0.7

Tin 0.0

Titanium 0.0

Boron 96

Barium 0.0

Molybdenum 59

Vanadium 0.0

Zinc 1160

Manganese 0.9

Calcium 2967

Phosphorous 1063

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[Jimbo]

Looks like a fairly robust additive package with a high TBN and zinc level and a dose of moly.

 

[Last_Z]

Looks pretty good, but with that wide spread in viscosity and it being GIII, I would imagine it would shear a lot and fairly quickly. I don't think this oil would be a good candidate for extended intervals....right???
Rick

 

[Sin City]

I made one error on the above topic. The SUS viscosity measurement is made at 210 F not at 212 F. 88.9 SUS= 17.72 cSt. This seems to be the latest version of Castrol Syntec 5W-50. The tech data sheet from Castrol lists the cSt viscosity at 100 C as 17.5.

 

[Last_Z]

SinCity,
Did Blackstone test this oil?
Thanks
Rick

 

[V6 Diesel]

My UOA on the 5w-50 had a SUS @ 95.7 which indicated no shearing at 5k miles. Was advised it was still in the 50 weight range. Had a TBN of 5 so it was not used up. Don't see why it wouldn't hold up for extended drains. I had run it up to 7K to 9k in the past with a filter change part way. No longer running it at this time.

Not that many UOA's on this oil to see if it shears in some engines.

 

[Sin City]

Last_Z the lab that tested this oil was Lubriport Laboratories, Inc. from Kennah, LA. I also had a UOA of this oil from a motorcycle forum in a BMW F650 Motorcycle where the oil performed very well but unfortunately the report would not print in full and now the link seems to be dead.

[ November 11, 2003, 07:32 PM: Message edited by: Sin City ]