Using 5W-40 oil instead of 0W-40
05-28-2021, 11:04 AM
#61
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So I'm due for an oil change, manage about 2k miles annually between oil changes, don't drive when temperatures are below 45 and live in CT where the summers are fairly hot (~90s), half of the trips are below 50 miles. Does it make a material difference whether i stick with the 0w40 or better to switch to the 5w50?
05-28-2021, 11:13 AM
#62
Assuming the M1 10W40 is Porsche A40 approved, I would not worry about it.
You *might* want to think about using a 5W-50 next time; I am not up on the technical details, and would defer to tech savvy folks like @Charles Navarro , @LexVan or @asellus , but there is something about "shear" (for which I understand is a rating of oil viscosity when hot?) issues with M1, and the fact the lighter M1 oils tend to not last as long as the thicker oils in hot climates (like Florida).
The Blackstone report for my last fill seems to confirm this. Below is a snip from my latest report. 10.90 was from the Feb '21 drain, 10.14 from the Feb '20 drain, both were M0-40. I anticipate better numbers with the next drain.
Last edited by Rich_Jenkins; 05-28-2021 at 11:17 AM.
05-28-2021, 11:16 AM
#63
Rennlist Member
The M1 5w40 or 10w40 will not carry the A40 approval.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
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Rich_Jenkins (05-28-2021)
05-28-2021, 11:30 AM
#64
When you say 'Warranty purposes' is this for aftermarket warranty or Porsche warranty ?
I don't have a Porsche/CPO warranty (I have a aftermarket one) and was highly recommended going with the 10w40. Honestly, this is very confusing and I'm starting to think I am overthinking this.
I don't have a Porsche/CPO warranty (I have a aftermarket one) and was highly recommended going with the 10w40. Honestly, this is very confusing and I'm starting to think I am overthinking this.
05-28-2021, 11:38 AM
#65
Rennlist Member
The M1 5w40 or 10w40 will not carry the A40 approval.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
https://www.mobil.com/en/lubricants/...1-fs-x2-5w-50/
05-28-2021, 11:39 AM
#66
Rennlist Member
When you say 'Warranty purposes' is this for aftermarket warranty or Porsche warranty ?
I don't have a Porsche/CPO warranty (I have a aftermarket one) and was highly recommended going with the 10w40. Honestly, this is very confusing and I'm starting to think I am overthinking this.
I don't have a Porsche/CPO warranty (I have a aftermarket one) and was highly recommended going with the 10w40. Honestly, this is very confusing and I'm starting to think I am overthinking this.
The only consideration is if the engine has a turbo (or any kind of forced induction) AND direct injection, then you need to use either a C40 oil or an oil that has protection against LSPI, such as Driven DI40, and will also meet the ACEA C2/C3 specifications for sulfated ash (for emissions system protection).
05-28-2021, 12:58 PM
#67
Rennlist Member
I just acquired 4 big jugs of LiquiMoly Leichtlauf High Tech 5W-40. Found it for a reasonable price - $46.85 CAD for a 5L jug ($38.75 USD)... seems like a good bet.
05-28-2021, 01:37 PM
#68
If the car is out of warranty, no need to worry about the A40 approval. There are much better oils than M1 0w40, some of which don't have A40 approval that have proven to work very well.
The only consideration is if the engine has a turbo (or any kind of forced induction) AND direct injection, then you need to use either a C40 oil or an oil that has protection against LSPI, such as Driven DI40, and will also meet the ACEA C2/C3 specifications for sulfated ash (for emissions system protection).
The only consideration is if the engine has a turbo (or any kind of forced induction) AND direct injection, then you need to use either a C40 oil or an oil that has protection against LSPI, such as Driven DI40, and will also meet the ACEA C2/C3 specifications for sulfated ash (for emissions system protection).
05-28-2021, 01:53 PM
#69
Rennlist Member
05-28-2021, 01:57 PM
#70
10W40 is what my indy just put, I'm trying to get a straight answer about if what he put is risking my engine or not.
05-28-2021, 02:06 PM
#71
Rennlist Member
05-28-2021, 02:07 PM
#72
Rennlist Member
I don't imagine they would be looking too hard at what oil is being used, but if you want to be on the safe side, a factory approved fill would be the safest route.
05-28-2021, 02:55 PM
#73
The M1 5w40 or 10w40 will not carry the A40 approval.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
Although the 5w50 will indeed shear out of grade relatively fast, so does the 0w40. If you are in a hot climate, if you stuck with running an A40 oil for warranty purposes and are choosing between M1 0w40 and 5w50, I'd go with the 5w50 for sure.
Provided the 5w40 fs x2 or any of the other M1 5w40 options can be sourced in the US would you recommend running that over M1 5w50 for those of us up in the Northeast?
05-28-2021, 07:02 PM
#74
Rennlist Member
If there is a 5w40 now that carries A40 approval, it's going to likely be a far cry better than the 0w40. No reason to run the 0w40 unless you live somewhere really cold.
Likewise, no harm in running the 5w50. Problem before was that it was almost impossible to find anywhere. I'd say if your ambient air temps are over 80F, then the 5w50 probably wouldn't be a bad thing, but a good 5w40 will do the job just as well.
Likewise, no harm in running the 5w50. Problem before was that it was almost impossible to find anywhere. I'd say if your ambient air temps are over 80F, then the 5w50 probably wouldn't be a bad thing, but a good 5w40 will do the job just as well.
