Supertech HM the only Energy Conserving?

[jeepman]

I was in Wally's today, and was checking the back of all of the High Mileage oils to see if any were "Energy Conserving" for the wife's PT Cruiser. I found that Supertech High Mileage is the only one with the certification on the back. No where to be found on MaxLife, Castrol High Mileage, Mobil High Mileage, Pennzoil High Mileage, and Quaker State High Mileage. I was under the impression that the EC label was based on the viscosity of the oil, so my question is does only Supertech High Mileage stay within grade, or am I confused on the use of this certification?

 

[SFCP]

Mobil's conventional High Mileage oil is also (energy conserving)...
But they only sell it in 10w30. Yes, Jeepman, I don't understand this either, and wish that Maxlife was energy conserving. I'm using it and loving it, but that is the only thing I don't like about it.

 

[Merkava_4]

Energy Conserving compared to what? That sounds like a relative term if I've ever heard one. If you and I have two identical cars going in two identical directions at two identical speeds - you hold your foot on the gas pedal to the red light and I let my foot off the gas and coast the rest of the way, my oil has just became energy conserving.

 

[G-MAN]

Quote:

---

Mobil's conventional High Mileage oil is also (energy conserving)...
But they only sell it in 10w30. Yes, Jeepman, I don't understand this either, and wish that Maxlife was energy conserving. I'm using it and loving it, but that is the only thing I don't like about it.

---

You can't have a Xw30 oil blended at the very top of the 30 wt range and still meet the fuel economy requirements of GF-4.

 

[Blue99]

Quote:

---

Energy Conserving compared to what?

---

Merkava, it's back to the API 101 Class on service grades & the donut for you!

http://api-ep.api.org/certifications/engineoil/categories/upload/EngineOilGuide2006.pdf


As G-Man explained, an oil has to pass the GF-4 fuel economy test, run against a PAO based reference oil, to earn the API "Energy Conserving" label.

 

[SFCP]

Quote:

---

Quote:

---

Mobil's conventional High Mileage oil is also (energy conserving)...
But they only sell it in 10w30. Yes, Jeepman, I don't understand this either, and wish that Maxlife was energy conserving. I'm using it and loving it, but that is the only thing I don't like about it.

---

You can't have a Xw30 oil blended at the very top of the 30 wt range and still meet the fuel economy requirements of GF-4.

---

Then someone explain to me how Mobil did it with their Conventional High Mileage oil that is energy conserving...the one with the black cap. I'm not talking about the synthetic High Mileage oil. I'm talking about the conventional High Mileage, and yes, it is energy conserving. How?

 

[Merkava_4]

How much of an energy savings are we talking about when comparing 10w30 to 10w30 HM?

 

[Blue99]

Traditionally, High Mileage oils are at the upper range of the 30 weights - from 11.5 thru 12 cSt.

Take a look at the Mobil Clean Hi Mileage Product Data Sheet , keep in mind G-Man's comment & you should be able to answer your own question!

 

[Blue99]

Quote:

---

How much of an energy savings are we talking about when comparing 10w30 to 10w30 HM?

---

At best, somewhere around 2-3%. A GF-4 10w30 must beat the reference oil by approx 1%.

 

[Merkava_4]

I already know that High Mileage oils are on the upper end of their viscosity range, which leads me to the question of what would be the difference in fuel mileage between an oil of 10.5 cSt and one of 12.0 cSt @100C?

 

[G-MAN]

Quote:

---

I already know that High Mileage oils are on the upper end of their viscosity range...

---

But some aren't, which is why they can meet the fuel economy requirements of GF-4.

 

[Gene K]

HM is no different than any other 30 Weight.

Energy conserving is code for "on the thin end of the 30 weight spectrum"

So if you want a "thin" 30 Weight with maybe a little extra detergent and maybe some extra seal conditioners you buy a HM that is Energy Conserving. If you want something on the "thick" end you are very careful to avoid the "Energy Conserving" Oils.