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Old 10-02-2020, 08:05 PM   #71
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^ I will either run that or the Havoline Pro DS 5w-30 once I use up my Valvoline 5W-30 MST Dexos (old formula). Can't beat either of those for the price either. https://www.walmart.com/ip/Havoline-...6-qt/537902742
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Old 10-03-2020, 02:46 PM   #72
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touched up the tune this week. oil life went down 11% while it was on the dyno. only made 9? pulls.

oh well.

i change mine around 4k. bolt ons and ethanol. oil always smells like a soy bean. car isn't rich so idk.

also i noticed that the m1 0-40 dexos stuff is pretty thin. my catch can traps a lot of it in comparison to the rotella t6 i normally run. id estimate 4-5 times more. i'm not going to use the m1 anymore after this.
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Old 10-03-2020, 07:54 PM   #73
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Originally Posted by s346k View Post
touched up the tune this week. oil life went down 11% while it was on the dyno. only made 9? pulls.

oh well.

i change mine around 4k. bolt ons and ethanol. oil always smells like a soy bean. car isn't rich so idk.

also i noticed that the m1 0-40 dexos stuff is pretty thin. my catch can traps a lot of it in comparison to the rotella t6 i normally run. id estimate 4-5 times more. i'm not going to use the m1 anymore after this.
I shoot for the same interval, settled on 50% oil life which puts me in that ballpark.


Still not comfortable with a 0w.
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Old 10-05-2020, 08:55 AM   #74
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touched up the tune this week. oil life went down 11% while it was on the dyno. only made 9? pulls.

oh well.

i change mine around 4k. bolt ons and ethanol. oil always smells like a soy bean. car isn't rich so idk.

also i noticed that the m1 0-40 dexos stuff is pretty thin. my catch can traps a lot of it in comparison to the rotella t6 i normally run. id estimate 4-5 times more. i'm not going to use the m1 anymore after this.
Maybe stop using dexos and instead try Mobil 1 0w/40 European Formula. Dexos is formulated for better fuel economy and catalytic protection across GM's entire fleet - both gasoline and diesel vehicles. Choosing dexos over other quality oils simply for the "dexos" label is not doing anyone any favors.
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Old 10-05-2020, 09:43 AM   #75
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Maybe stop using dexos and instead try Mobil 1 0w/40 European Formula.
the euro was the first 0-40 i tried and what initially prompted me to install a catch can. watching oil drip off the tb after removal was neat.
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Old 10-05-2020, 10:35 AM   #76
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the euro was the first 0-40 i tried and what initially prompted me to install a catch can. watching oil drip off the tb after removal was neat.
Do you fill to the full line?

Might try it to half on the oil stick. I haven't pulled my intake to check since I been doing it but heard it helps
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Old 10-05-2020, 11:05 AM   #77
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Do you fill to the full line?

Might try it to half on the oil stick. I haven't pulled my intake to check since I been doing it but heard it helps
10 quarts puts me right in the middle of the hash marks on the dipstick.
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Old 10-05-2020, 06:29 PM   #78
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Do you fill to the full line?

Might try it to half on the oil stick. I haven't pulled my intake to check since I been doing it but heard it helps
yes, i run it full. i have an easy solution, i simply won't use the m1 0-40 oil(s). i went through this in 05 with m1 oil and for some reason came right back to it.
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Old 10-18-2020, 08:13 AM   #79
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"Cold flow" means the resistance to flow at temps lower than operating temps. It's measured at 40C (104F).
According to the EE video, cold flow is measured at NEGATIVE 10C and NEGATIVE 40C. Also, the video implies that cold flow does not refer to less the than operating temp but rather what could best be described as winter ambient temps. (Yes, technically winter ambient is less than operating, but you get the point)

Is the video incorrect?
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Old 10-18-2020, 08:45 AM   #80
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For anyone looking for 5w-40 Dexos, Amalie is still priced right https://www.amazon.com/Amalie-Elixer.../dp/B01N6X1R9P
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Old 10-18-2020, 09:36 AM   #81
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According to the EE video, cold flow is measured at NEGATIVE 10C and NEGATIVE 40C. Also, the video implies that cold flow does not refer to less the than operating temp but rather what could best be described as winter ambient temps. (Yes, technically winter ambient is less than operating, but you get the point)

Is the video incorrect?
It's remarkably hard to find a solid answer on what temps are used for the cold-temp nominal viscosity rating. The most common answer seems to be that the low number is rated at 0F, or -17.8C. There is a also a pour point often published for an oil that tells us what temp it stops flowing altogether.
What's important, and what I was pointing out, is that the published viscosities for most oils are at 40C and 100C, and that even a 0w-XX oil has much more resistance to flow at 40C than a "thick" oil (like straight 50w) at 100C. IOW, all the talk about a 0w-XX oil only having benefits in very cold climates is just wrong, because it has much better flow during a "cold start" at 104F too.
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Old 10-18-2020, 01:14 PM   #82
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It's remarkably hard to find a solid answer on what temps are used for the cold-temp nominal viscosity rating. The most common answer seems to be that the low number is rated at 0F, or -17.8C. There is a also a pour point often published for an oil that tells us what temp it stops flowing altogether.
What's important, and what I was pointing out, is that the published viscosities for most oils are at 40C and 100C, and that even a 0w-XX oil has much more resistance to flow at 40C than a "thick" oil (like straight 50w) at 100C. IOW, all the talk about a 0w-XX oil only having benefits in very cold climates is just wrong, because it has much better flow during a "cold start" at 104F too.
Based on the EE video, I think this is incorrect. I think the cold “W” number is sub freezing.

It’s an SAE standard, so it should not be that hard to find. I’ll look up the SAE paper later when I have time.
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Old 10-18-2020, 04:52 PM   #83
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Based on the EE video, I think this is incorrect. I think the cold “W” number is sub freezing.

It’s an SAE standard, so it should not be that hard to find. I’ll look up the SAE paper later when I have time.
Do look that up. I'd be curious what the horse's mouth has to say (the SAE). I didn't run across it quickly. However, again I encourage people to look at the actual data sheets for the various oils. Look at the viscosities at 40C (104F), and then consider that this represents a cold start in even the warmest of climates. Again, there is a meaningful difference in oil flow, even when the ambient temp is 104F: 0w-XX oil simply flows better. IOW, 0w-XX oil improves cold-start protection in cold or warm climates.
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Old 11-06-2020, 08:12 AM   #84
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RockAuto is now selling Mobil 1 ESP Formula 0W-40. $6.84/quart.

https://www.rockauto.com/en/tools/en...+0w-40,1001841
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