Castrol specs for SL formulation

[Patman]

I emailed Castrol asking for them to send me the specs on their oils under the SL formulation
and I got them in snail mail today. I'm not all that impressed. I will post the specs for their
10w30 oils (if anyone wants the other viscosities you can ask and I'll type them later, it's just
too much typing all at once)

Castrol GTX 10w30

Vis at 100c-10.7
VI-142
HTHS-3.1
Flash is 415F
Pour is -30c
Zinc-0.11%
Phos-0.10%

Castrol Syntec Blend 10w30

Vis at 100c-11.5
VI-138
HTHS-3.1
Flash is 415F
Pour is -33c
Zinc-0.11%
Phos-0.10%

Castrol High Mileage 10w30

Vis at 100c-12.0
VI-149
HTHS-3.3
Flash is 415F
Pour is -30c
Zinc-0.11%
Phos-0.10%

Castrol Syntec 10w30

Vis at 100c-10.0
VI-159
HTHS-3.1
Flash is 450F
Pour is -36c
Zinc-0.11%
Phos-0.09%

I find it especially sad how the Syntec Blend doesn't look any better than the regular GTX,
yet at a higher cost.

 

[jason07-1zzfe]

I just emailed them also, about GTX because I was curious why its consumption was much lower than Mobil1. And I asked about the NOACK and if they had moly and they essentially avoided those questions as you can see.
And so obviously there is more to consumption than flash and NOACK.

code:

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Thank you for contacting Castrol regarding GTX Conventional Motor Oil.



The Typical Inspection Data for all GTX grades appears below.



The NOACK

volatility requirement for ILSAC GF3 is maximum 15% burn-off for

all grades of motor oil. All

Castrol grades meet the GF3 requirements.

As far as formulary, please

understand that this is proprietary

information.



CASTROL GTX

TYPICAL PROPERTIES

SAE Grade

Method

5W-20

5W-30

10W-30

10W-40

20W-50



API Service

SL

SL

SL

SL

SL



ILSAC



GF-3

GF-3

GF-3





Specific Gravity, 60°F ASTM D-1298

0.857

0.858

0.869

0.874

0.882

Pounds per Gallon

7.14

7.15

7.24

7.28

7.35

Viscosity, cSt 100°C ASTM D-445

8.8

10.7

10.7

14.2

17.6

Viscosity, cSt 40°C ASTM D-445

50

63

72

100

153

Viscosity Index ASTM D-2270

158

160

142

150

128

Low Temperature (ºC)

Cranking Viscosity, cP max ASTM D-5293






Low Temperature (ºC)

Pumping Viscosity, cP max ASTM D-4684

60,000 (-35C)

60,000 (-35C)

60,000 (-30C)

60,000 (-30C)

60,000 (-20C)

High Temperature High Shear

Rate Viscosity, cP @ 150° C CEC L-36-A-87

2.8

3.1

3.1

3.7

4.0

Flash Point, COC, °F(°C) ASTM D-92

400(204)

400(204)

415(213)

415(213)

440(227)

Fire Point, COC, °F(°C) ASTM D-92

430(221)

430(221)

445(229)

445(229)

470(243)

Pour Point, °C max ASTM D-5950

-30

-33

-30

-30

-21

Zinc % wt ASTM D-4951

0.11

0.11

0.11

0.11

0.09

Phosphorus % wt ASTM D-4951

0.10

0.10

0.10

0.10

0.08





Once again, thank you for contacting us. We trust that the information

provided is to your satisfaction. Please

contact us if we can help again

in the future.







Lynn Hansen



Reference: 120809

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[Patman]

Why can't they just answer a simple question like "is there moly in your oil?" It's not as if
anyone is going to just go out and take that info and make their own oil! So why keep it
secret? If someone really needs the info, they can spend $25 and have a virgin sample
analyzed, so as a company, why not just answer the consumers questions and give out this
proper info?

 

[BOBISTHEOILGUY]

Patman,
Most companies who pay minimal wages for someone to answer phones have an answer sheet to respond with and have no real idea themselve what you may be reffering to. The true engineers are in the background and are not the ones you get to talk with.

I contacted texaco one time and when discussing items listed about oil, they had no idea, and after a bit, I finally got to some one with some idea of what was going on, I THINK? maybe? oh well, seems that is the norm and the person that responded to your question about moly in that oil doesn't know what exactly you're taking about.

 

[Chris J.]

I got Castrol NA to send me data sheet on Syntec and their 10W-30 read like this:

Spec. Grav. 60 F 0.85
Vis., cSt
@40 C (ASTM D445) 70
Vis., cSt
@100 C 11.5
HTHS 3.5
VI 159
Flash Point 455 F(235C)
Pour Point -27F (-33C)

Thats the main stuff. Theres more I can post if anyone needs/wants it.