Right, based on an unknown laboratory that only one person on BITOG has access to for comparison. So you choose to cherry-pick to make your case, rather than look at the preponderance of evidence to the contrary.
RLI BioSyn Winter Performance
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Right, based on an unknown laboratory that only one person on BITOG has access to for comparison. So you choose to cherry-pick to make your case, rather than look at the preponderance of evidence to the contrary.
you're correct. Dyslexia. Sorry.
There is no doubt that RLI blends the 5w40 on the heavy side. RI_RS4 measured 16.1. Bruce got 16.7. When you blend an oil right at the edge of the 40 range you're bound to get a batch every now and then that crosses the line. Plus, you've got to figure in normal measurement variations too. Thus, I'd say the difference between 16.1 and 16.7 is statistically insignificant. The former is just barely under the 40/50 threshold; the latter is just barely above it.
The lab I trust very much. You are very correct. It is a sample of 1.
Maybe someday I’d like to randomly, blindly get a quart myself. I’d really love to see the cold temperature results and the NOACK results as well.
I’m questioning these things, that’s all.
I did a 15 minute scan of the web for some 5w30 and 5W-40 data, please, please list some other manufacturers. It is entirely possible for a 5W-40 given the correct base oil and VII's (ppa's) to have some lower cold temp properties than 5w30's.
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RLI
For the 5W30, CCS @-30C is 6200 cP
For the 5W40, CCS @-30C is 6600 cP
For the 5W30, MRV @-30C is 22,000 cP
For the 5W40, MRV @-35C is 15,000 cP
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Scheaffer:
5W-40
CCS Viscosity @ -30C cP (ASTM D-5293) 4,311
Mini-rotary Viscosity-TP.1 @-35C cP (ASTM D-4684) 16,200
5w30
Cold Cranking Viscosity (ASTM D-5293)
@-30C, cP 6,000
Mini Rotary Viscosity TP-1 @ -35C;, cP (ASTM D-4683) 19,500
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Amsoil
ASL 5w30
CCS Viscosity @ -30°C, cP (ASTM D-5293) 5322
XLF 5w30 (Group III)
CCS Viscosity, cP @ -30 (°C) (ASTM D-5293) 4341
Amsoil AFL 5W-40
Viscosity CCS, cP @ -30°C (ASTM D-5293) 5121
Amsoil DEO 5W-40
CCS Viscosity @ -30°C, cP (ASTM D-5293) 5852
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Mobil 1 EP – nothing published (?)
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Castrol Syntec
5w30
Low Temperature Cranking Viscosity
(ºC) ASTM D- 5293 6200@-35
Low Temperature Pumping Viscosity
(ºC) ASTM D- 4684 , cP max 60000@ -40
5W-40
Low Temperature Cranking Viscosity
(ºC) ASTM D- 5293 6600@ -30
Low Temperature Pumping Viscosity
(ºC) ASTM D- 4684 , cP max 60000@ -35
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Valvoline Synpower 5W30:
CCS: 4900 @-30C
MRV: 18,600 @-35C
Valvoline Synpower 5W40:
CCS: 6000 @-30C
MRV: 20,000 @-35C
Pennzoil Platinum 5W30 (original EOP formulation):
CCS: 4410 @-30C
MRV: 6,600 @-35C
Pennzoil Platinum 5W30 (current formulation):
CCS: 5150 @-35C (-30C??, Pennzoil typo??)
MRV: 14,800 @-35C
CCS: 4900 @-30C
MRV: 18,600 @-35C
Valvoline Synpower 5W40:
CCS: 6000 @-30C
MRV: 20,000 @-35C
Pennzoil Platinum 5W30 (original EOP formulation):
CCS: 4410 @-30C
MRV: 6,600 @-35C
Pennzoil Platinum 5W30 (current formulation):
CCS: 5150 @-35C (-30C??, Pennzoil typo??)
MRV: 14,800 @-35C
Quote:
........I just switched to RLI 5W40 and will have it in for the year since I only do about 6k miles annually. I should have a UOA posted around October 2008. Stay tuned ...
What are the lowest temps you will be seeing in the winter?
Have you seen a drop in mileage since starting on the RLI 5W40 ? (I'm assuming you were using a 5W30 or 10W30 previously)
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