Re: other weights...
Originally posted by JyRO
Jeremiah - let me/us know what you find out about other weight Valvoline Premium Blues.
dpetre -
How do you live? I can't imagine -72°F. I'd just stay inside.
- JyRO
Following are comments from Cummins. It occurs to me the oil of choice might be 5W30 dino, not synthetic. Only problem is, I haven't found it yet.
Oil
I received this answer from Cummins when I posed the question to the tech support folks:
Summary: ram isb03 o&m hdeo winter
Solution:
Thanks for the email Casey. We hope we're straight on F vs. C. We can't believe it's already below zero degrees F up there! All of the major oil companies make 10W-30 diesel CH-4 and now CI-4 oils. We know that Esso up there makes such products, in fact they have an excellent 50% synthetic heavy-duty diesel oil (HDEO) that uses both polyalpha olefin (the common synthetic base stock) and the more expensive polyol ester base stock. Refer to the below temp chart:
WARNING
An SAE 10W30 designation on a product is a viscosity designation only.
This designation alone does not imply that the product meets Cummins requirements. Only 10W30 oils with diesel performance credentials listed in Table 1 may be used in Cummins Engines if the reduced ambient temperature indicated in Figure 1 is observed. Only 10W30 oils meeting CES
20078 (API CI-4) can be used in the ambient temperature range similar to 15W40 oils
Recommended SAE Oil Viscosity Grades vs. Ambient Temperatures
Oil Viscosity Season Ambient
Ratings Temperature Range (deg F)
5w-40 or 15w-40 All seasons Temps above +5 deg F
10w-30 and CI-4 " " -5 deg F to +115 deg F
10w-30 Winter Conditions -5 deg F to + 70 deg F
5w-30 " " -15 deg F to +70 deg F
0w-30 Arctic Conditions Temps below 32 deg F
According to the chart above the proper classification 10W-30 should be good to below zero Farenheit.
We thank you for your interest in Cummins products.
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