M1 5w30 EP HM got thinner!

Joined
Oct 27, 2018
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673
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MD
I prefer it in my Maxima 2009 (104k miles) due to its higher kv100 viscosity (was 11.9).
I checked today and was surprised to see it at 10cSt (M1 5w30 EP non HM is 10.6)
I am contemplating finding a thicker 5w30. I switched from M1 FS 0w40 in fear of ruining my cats 🐈🐈🐈 (my engine burns about half a quart to a quart in my 5k OCI, sump is 5.1q)
 
Joined
Jan 7, 2022
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Chicago
PP high milage is 11.4 but I use ck4/sn 5w30 that's 12. I'm going to try HPL oil next so doesn't shear down in my infiniti
 
Joined
Dec 23, 2020
Messages
895
Location
Midwest
I prefer it in my Maxima 2009 (104k miles) due to its higher kv100 viscosity (was 11.9).
I checked today and was surprised to see it at 10cSt (M1 5w30 EP non HM is 10.6)
I am contemplating finding a thicker 5w30. I switched from M1 FS 0w40 in fear of ruining my cats 🐈🐈🐈 (my engine burns about half a quart to a quart in my 5k OCI, sump is 5.1q)
Nice find! I looked at the rest of the M1 lineup and a couple of others changed too:
EP HM 0W20 went from 8.7 to 8.5
EP HM 5W20 went from 8.7 to 8.1

Non-EP M1 HM 5W30 remains at 11.9. Is that an option for you?

Castrol Edge HM 5w30, Viscosity, Kinematic 100C 11.3.
I thought so too. But when I bought some and did a VOA, I discovered the viscosity was 9.83. Then I went back to Castrol's site and noticed TWO PDS sheets from 2020. One of them is 9.9 (the one I bought). Then I looked a little closer and saw verbiage on the PDS about "reduced Phosphorus to protect catalytic converters" and on my bottle I saw similar verbiage. The other PDS for the 11.3 stuff says nothing about this. I went to Walmart and looked at all their EDGE HM bottles and they all have the same blurb.

I don't know where you would be able to find the 11.3 version of EDGE HM 5W30, but I couldn't find it anywhere local.
 
Joined
Apr 11, 2016
Messages
302
Location
Kathleen , FL
Nice find! I looked at the rest of the M1 lineup and a couple of others changed too:
EP HM 0W20 went from 8.7 to 8.5
EP HM 5W20 went from 8.7 to 8.1

Non-EP M1 HM 5W30 remains at 11.9. Is that an option for you?


I thought so too. But when I bought some and did a VOA, I discovered the viscosity was 9.83. Then I went back to Castrol's site and noticed TWO PDS sheets from 2020. One of them is 9.9 (the one I bought). Then I looked a little closer and saw verbiage on the PDS about "reduced Phosphorus to protect catalytic converters" and on my bottle I saw similar verbiage. The other PDS for the 11.3 stuff says nothing about this. I went to Walmart and looked at all their EDGE HM bottles and they all have the same blurb.

I don't know where you would be able to find the 11.3 version of EDGE HM 5W30, but I couldn't find it anywhere local.
Data sheet from June 30th 2020 says , 11.3 , the data sheet from Jan 10th 2020 says 9.9. When did you have the test done ?
 
Joined
Feb 6, 2021
Messages
1,022
Location
Massachusetts
I prefer it in my Maxima 2009 (104k miles) due to its higher kv100 viscosity (was 11.9).
I checked today and was surprised to see it at 10cSt (M1 5w30 EP non HM is 10.6)
I am contemplating finding a thicker 5w30. I switched from M1 FS 0w40 in fear of ruining my cats 🐈🐈🐈 (my engine burns about half a quart to a quart in my 5k OCI, sump is 5.1q)
Maybe try the SP rated Pennzoil Platinum Euro 5w40.
 

wlk

Joined
Aug 21, 2016
Messages
477
Location
Pennsylvania
.5qt is fine but if you want a thick 5w30 use PP Euro l 5w30. It is gas rated. 12.1cst @ 100°c. Ran it in my son's Volvo C30 for 7k-ish oci and it stayed on full, it was using about 1qt to 1.5qts/7k oci.
 
Joined
Mar 20, 2008
Messages
14,306
Location
USA
A half a quart, or even a whole quart, every 5k is nothing to worry about at all :D

You don't need special cat-friendly oil for that little burning. If it was a quart every 1k then it would be more of a concern.

Use the 0w40 and relax :)
 
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