M1, EP, HM 5w30 for non extended drain use?

[Johnny248]

M1 vs M1 EP - What is different about these two oils which allow the claim of up to 15k intervals with the EP? Are the two oils completely different formulas? Or is the EP basically the same oil with extra additives to allow for a longer life?

Is there some sort of compromise of the oil quality in terms of performance/wear protection/etc with that the EP gives up in order to allow for the extended interval use?

If these two oils are the same price, would one do anything any better than the other if being used for a shorter interval like 5-6k? Other than the wasting of oil that could be good for twice the use, does the EP do anything better or worse than the standard m1?

On another note, when looking at M1HM 5w30, it shows it being SL rated vs SN of M1 and EP, with higher phosphorous and zinc content.

Would the HM actually be a better choice for wear protection vs the SN options in a vehicle that was originally spec'd for SL oil? Or should be totally believe in the new formulations backward compatibility?

 

[285south]

EP has higher PAO ratios and a better add pack.

 

[Greasymechtech]

What engine?

Take a look at the HTHS of all three in your required grade.

M1-HM is my preferred choice.

 

[Johnny248]

Originally Posted By: Greasymechtech
What engine?

Take a look at the HTHS of all three in your required grade.

M1-HM is my preferred choice.



This would be my '06 3.8l v6 Mitsubishi Eclipse GT.

The manual states (and even after 10 years, this still sounds crazy to me. To me, reading between the lines states that 10w30 is the best choice for this engine, and the engineers would like you to use it, but the government and pressure for fuel efficiency wants you to use 5w20)

"5w20 engine oil is strongly recommended for optimum fuel economy and cold starting. If the ambient temperature is not within useable temperature range shown in the above illustration, use 10w30 engine oil"

That being said, I've been running 5w30 it since new. It has about 70k on it now, and is not driven in the winter months.

 

[Kuato]

"Not driven in winter" means to me that it'll never be run in temps below 0°F, so 10w30 according to the chart. Your choice of 5w30 is great.

 

[Greasymechtech]

5w30 year round is a good choice.

Some 5w30 compared:

M1 ESP HTHS 3.58, 12.1cst
M1 HM 3.3, 11.7
M1 3.1, 11
M1 EP 3.0, 10.6
SS ?, 10.5

0w40 3.8, 13.5
5w40 3.8, 14.5

 

[901Memphis]

I would use Mobil 1 High Mileage 5w30

 

[Boss302fan]

Originally Posted By: 901Memphis
I would use Mobil 1 High Mileage 5w30


Ditto...

 

[demarpaint]

Originally Posted By: Johnny248
Originally Posted By: Greasymechtech
What engine?

Take a look at the HTHS of all three in your required grade.

M1-HM is my preferred choice.



This would be my '06 3.8l v6 Mitsubishi Eclipse GT.

The manual states (and even after 10 years, this still sounds crazy to me. To me, reading between the lines states that 10w30 is the best choice for this engine, and the engineers would like you to use it, but the government and pressure for fuel efficiency wants you to use 5w20)

"5w20 engine oil is strongly recommended for optimum fuel economy and cold starting. If the ambient temperature is not within useable temperature range shown in the above illustration, use 10w30 engine oil"

That being said, I've been running 5w30 it since new. It has about 70k on it now, and is not driven in the winter months.

I'd use my favorite synthetic 5W30 and call it a day.

 

[Johnny248]

Went with the 5w30 M1HM from your recommendations. At $23.88 for a 5qt jug, can't go wrong I guess.

I know the GF-5, SN oils are supposed to provide the same or better wear protection with all of the new technology, but this HM SL oil has higher phosphorus and zinc levels which we know is good, and as stated before the car was originally spec'd for SL oil so I don't see any harm in using this over the M1 or EP.

The EP looks like good oil though and I am thinking about using it in my '11 Ram 5.7 in 5w20 or even 0w20 (not sure if they have the 0w20 EP at WM). The Ram calls for 5w20 although I have used 0w20 in it. I change the oil based on the DIC reminder which generally tells me to change it about every 8k. EP may be overkill at 8k, but if it is considered a better oil than the plain jane M1, I'd rather use it.

 

[Johnny248]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I was editing that and wanted to delete it, but ran out of time. This is what I really wanted to say.

----------------------------------------------------------

Went with the 5w30 M1HM from your recommendations. At $23.88 for a 5qt jug, can't go wrong I guess.

I know the GF-5, SN oils are supposed to provide the same or better wear protection with all of the new technology, but this HM SL oil has higher phosphorus and zinc levels which we know is good, and as stated before the car was originally spec'd for SL oil so I don't see any harm in using this over the M1 or EP.

And now....

Yesterday I started my '11 Ram 5.7, and I got the darn "Oil Change Due" reminder on my dashboard. So now I need to change the oil in it also.

The EP looks like a good oil, and was considering using it in the Ram. It calls for 5w20 that is Chrysler MS-6395 approved. It doesn't show what API rating should be used? Looking at the Mobil 1 info, it doesn't appear that any of the M1, EP, or HM 5w20 meet that 6395 spec?

I change the oil based on the oil change monitor, which usually goes off around 8k. I see that there is a M1 HM 5w20 SL oil. Would that be a bad choice for this newer engine? If it is, I would probably lean toward the 5w20 or 0w20 EP option, even it if might be a little bit overkill for 8k intervals. I'd prefer to have the "best" option in my engine since I own my vehicles and keep them for awhile (not opening the door to engine life of conventional vs syn oils, just my preference to run synthetics). If the EP is truly a "better" oil than the standard M1, I'd rather use it even if it does cost $5 more for a jug. The thing about this truck that kills be is the 7qt capacity. That means I have to either spend another $18 for 2qts of oil, or buy another jug and use the left over for the next oil change.

So..... is the EP the best choice for the RAM of the three options? Is the lack of the MS-6395 stamp of approval a problem? Give my options, which way would you go? I could even throw the AFE in there as an option, although I did try it on another vehicle I owned and never felt really good about it. It's probably psychological, but I have this thought in my head that the emphasis on fuel economy takes away from the overall performance, wear protection, and useable life of the AFE.

M1EP 0w20
M1EP 5w20
M1HM 5w20
M1AFE 0w20
M1 0w20

Thanks for everyone's thoughts regarding the Eclipse, and thanks in advance for those regarding the RAM.

 

[ExMachina]

Originally Posted By: Johnny248

So..... is the EP the best choice for the RAM of the three options? Is the lack of the MS-6395 stamp of approval a problem? Give my options, which way would you go? I could even throw the AFE in there as an option, although I did try it on another vehicle I owned and never felt really good about it. It's probably psychological, but I have this thought in my head that the emphasis on fuel economy takes away from the overall performance, wear protection, and useable life of the AFE.

M1EP 0w20
M1EP 5w20
M1HM 5w20
M1AFE 0w20
M1 0w20

Thanks for everyone's thoughts regarding the Eclipse, and thanks in advance for those regarding the RAM.


I vote for M1EP for the Ram. More PAO in the basestock, stronger package to lay down less deposits per mile than the others, part of the reason why the EP can go extended miles....

 

[Greasymechtech]

M1-HM is an excellent choice for the Eclipse.

For the Ram,

M1HM 5w20
visc 50.1/8.6
HTHS 2.7
pour point -42
VI 150

M1EP 0w20
44.9/8.6
2.7
-54
173

M1EP 5w20
49.6/8.9
2.75
-42
161

Coin toss. Don't care for AFE. Either EP or HM that Ram.

 

[anndel]

M1 HM 5W-30