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#3425347 - 07/15/14 09:45 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: yvon_la]
OVERKILL Offline


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Originally Posted By: yvon_la
This oil has to be annoying for othe in the oil industry.that line that mention viscosity at 150 (astm d5481)this alone makes a huge difference .oil industry usually try to stay away from the d5481 .as temperature rise oil flaw pop up


??????

All PCMO's and HDEO's list HTHS, which is measured at 150C.

Originally Posted By: ASTM

ASTM D5481 - 13

Standard Test Method for Measuring Apparent Viscosity at High-Temperature and High-Shear Rate by Multicell Capillary Viscometer


You have no idea what you are talking about.
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#3425394 - 07/15/14 10:58 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: ARCOgraphite]
pbm Offline


Registered: 04/19/04
Posts: 5128
Loc: New York
Originally Posted By: ARCOgraphite
SPK200 "Sludge up" - what do you mean? Some Cream around the fill cap inn the winter.?Sounds like you have a PCV issue.

I have seen too much varnish and experienced sticking TC tensioner on the newish Subaru running M1 0w20 and QSUD. The Valvoline 0w20 seems to keep the fill hole and the visible VCT spotless - though that doesn't equate to well lubed or long engine life. I have PU 5w20 in there now -a Noisy oil at start of OCI due to extremely high DD doping - hopefully it'll even out after 1500 miles. I would say typical of a non majority ester syn LL oil.



Arco:
What do you mean by "DD doping"?
Are you saying the old PU had "high DD doping"?

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#3426389 - 07/16/14 10:57 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: OVERKILL]
yvon_la Offline


Registered: 05/20/14
Posts: 599
Loc: quebec canada
Originally Posted By: OVERKILL
Originally Posted By: yvon_la
This oil has to be annoying for othe in the oil industry.that line that mention viscosity at 150 (astm d5481)this alone makes a huge difference .oil industry usually try to stay away from the d5481 .as temperature rise oil flaw pop up


??????

All PCMO's and HDEO's list HTHS, which is measured at 150C.

Originally Posted By: ASTM

ASTM D5481 - 13

Standard Test Method for Measuring Apparent Viscosity at High-Temperature and High-Shear Rate by Multicell Capillary Viscometer


You have no idea what you are talking about.
my bad then !was sure this number wasnt easily avail (willingly shown like here)sorry then if it is easilly gotten .i stand corrected
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#3426537 - 07/16/14 01:38 PM Re: Walmart SuperTech Synthetic spec sheet info [Re: David1]
OVERKILL Offline


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
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#3426923 - 07/16/14 08:39 PM Re: Walmart SuperTech Synthetic spec sheet info [Re: OVERKILL]
yvon_la Offline


Registered: 05/20/14
Posts: 599
Loc: quebec canada
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#3427318 - 07/17/14 09:38 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: yvon_la]
OVERKILL Offline


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Originally Posted By: yvon_la


Those values are normal for their respective grades on this side of the pond.

The HDEO's and Euro oils have higher HTHS values.
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#3427395 - 07/17/14 10:53 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: yvon_la]
Garak Offline


Registered: 12/05/09
Posts: 10996
Loc: Regina, Saskatchewan, Canada
Originally Posted By: yvon_la
isnt those value a bit low for hths or there is no requirement?

Beyond what Overkill mentioned, those values are required to be that low for ILSAC approval. Look at Delvac 1 LE 5w-30. I'm sure it's got the phosphorous levels for GF-5. It certainly doesn't have the HTHS levels for GF-5, given that it has CJ-4 approval.
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#3428121 - 07/18/14 04:03 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: David1]
Shannow Offline


Registered: 12/12/02
Posts: 26076
Loc: a prison island
yvon_la,
what's interesting on this product data sheet is that it includes high shear at 100C, which IS a somewhat rare parameter to see anywhere.

Oils with Viscosity Index Improvers have historically had an issue with the viscosity measured in a typical viscometer being greater than the viscosity that is experienced in the bearing...it's called temporary viscosity loss, a loss in high shear conditions that recovers when it's not being sheared at that rate.

The high shear rate is of the order of what's seen in an engine, and CATERHAM is probably pretty close to the mark with his measurement of it.

Look at this oil, it's KV100 is 11 under the standard testing, but under high shear rates, the effective viscosity of that oil is 7.26...that's what is being seen in the bearing. If it was a "straight" SAE 30, the high shear 100 and the KV100 should be the same.

The temperature of 150C for the typical HTHS on most PDS' was adopted...not sure on why the 150C was chosen, but 120-130C is probably readily attainable in the temperature rise across the working bearing, so 150C isn't that extreme.

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#3428161 - 07/18/14 06:13 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: David1]
yvon_la Offline


Registered: 05/20/14
Posts: 599
Loc: quebec canada
Hths value at 100c ?i dont understand?so the 100c test is rarely hths?so basicly people couldnt compare hths 150 value with the 100 c value directly (since it isnt a hths 100c)?outch .i am beginning to remember why i hate mathematic.i hadnt notice that.

Ps:wow are kv100 value always so far from hths100 value?outch !i wonder wich car maker check when saying 10 per 1000 rpm .the kv100 value or the hths100 value .if it is the hths100 value?outch !
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#3428164 - 07/18/14 06:18 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: David1]
yvon_la Offline


Registered: 05/20/14
Posts: 599
Loc: quebec canada
Shannow!you are the man!ty for pointing out and explaining whats what short history .so basicly what you meant is :it would be way harder on oil maker if they were required to do hths 100c instead of the 100c we usually see
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#3428167 - 07/18/14 06:21 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: David1]
yvon_la Offline


Registered: 05/20/14
Posts: 599
Loc: quebec canada
last question!does it mean on a straight sae oil the oil maker are required to use hths at all temperature they test?
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#3428373 - 07/18/14 10:11 AM Re: Walmart SuperTech Synthetic spec sheet info [Re: yvon_la]
OVERKILL Offline


Registered: 04/28/08
Posts: 25660
Loc: Ontario, Canada
Originally Posted By: yvon_la
Shannow!you are the man!ty for pointing out and explaining whats what short history .so basicly what you meant is :it would be way harder on oil maker if they were required to do hths 100c instead of the 100c we usually see


No, it wouldn't be any harder, it is just another test to yields another set of values and is one that isn't common, which is why you don't see it. The "standard" is to measure it at 150C.
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