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Low temperature pumping viscosity @ -30°C(MRV), cP 9,500 10 w 30 @ -35°C(MRV), cP 12,900 5 w 30 These numbers are from the Shell synth.data sheet. It is good ? I want to use this oil in the future (canadian Tire Formula 1) - -
 
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quote:
Originally posted by Baveux: Low temperature pumping viscosity @ -30°C(MRV), cP 9,500 10 w 30 @ -35°C(MRV), cP 12,900 5 w 30 These numbers are from the Shell synth.data sheet. It is good ? I want to use this oil in the future (canadian Tire Formula 1) - -
The numbers look terrible to me, Baveaux. It makes it hard to tell since 10-30 should be specified ar -25 and 5-30 at -30. Since the centipoise is not specd.at standard temps., it make it very difficult to evaluate. Curious ratings? Imho a good 5W-30 should be around 4200 @ 30C and a good 10W-30 Should be at around 4700 @ 25C for cold weather. Specs at non-standard temps make it difficult to tell.
 
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Mobil 1 5W-30 number's are 12,700 at the same temp. So I guess for cold weather operation this oil is in good company. Did you get any other specs for this oil? Whimsey
 
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Low temperature pumping viscosity @ -30°C(MRV), cP 9,500 10 w 30 @ -35°C(MRV), cP 12,900 5 w 30
Is is safe to assume that, since the 5w is thinner, the 5w30 if tested at -30C would be less than 9,500?
 
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