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Oct 8, 2005 | 05:24 PM

grbr95

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HM inquiry

Ok...still been looking for Mobil High Mileage in the 5/30... The only weight that I can find at Autozone and Advance are 10/30 and Walmart doesn't even have HM Mobil.

And if anyone out there can please tell me how it is that Mobil makes the only High Milage "energy conserving" HM oil????

All other brand HM's are non-engery conserving. How does Mobil do it? On the flip side, perhaps their HM is not as good as Castrol's or Valvoline's HM. (?)

Oct 8, 2005 | 08:21 PM

Flash

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Here is the poop sheet on the Mobil HM oils. Look at the 5w-30 oils Viscosity at 100C. Then take a look at the Viscosity Index. Note that it is higher than the others. Also note the CCS (Cold Crank) is rated at lower temps. This oil is obviously a synthetic blend. The 10w-30 is not near the oil that the 5w-30 is per their spec sheet The Viscosity rating at 100C means it is towards the thinner end of the viscosity range than most HM oils which are generally at the thick end of the range. Mobil is putting more value in the build of their 5w-30 than other HM oils which is why the "Energy Conserving" rating.
http://www.mobiloil.com/USA-English/...age_5W-30.aspx

Most likely they are accomplishing it by using more GpIII basestock than others. M/E has a raffinate process to produce this basestock at very reasonable costs.

Note: click on the "Product data sheet" at the bottom of the linked page.

Oct 8, 2005 | 10:33 PM

grbr95

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Flash,

Yes, I see what you mean. hu.
So you think it's one to stear clear of, not use vs the Val or Castrol HM?

Oct 8, 2005 | 10:35 PM

ford390gashog

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it seems most companies are putting all the goodies in the 5w30 and 5w20 oil and have given up trying to improve the rest.

Oct 8, 2005 | 11:18 PM

TallPaul

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Quote:

Originally Posted by ford390gashog

it seems most companies are putting all the goodies in the 5w30 and 5w20 oil and have given up trying to improve the rest.

I think it depends on the brand. When I reviewed the MSDSs for Durablend it showed more Group I in the 10w30 than in the 5w30 and more group I in the 5w30 than in the 10w40 (which actually did not show any Group I, just II or III). The 15w40 was back to a lot of Group I.

OTOH, Maxlife showed the same proportion of Group I for all grades including the straight 30. Of course when they show a range there is some room for adjustment.

Oct 9, 2005 | 12:01 PM

grbr95

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Does Mobil's HM 10/30 weight oil seem to be a good oil for me use? I like it because it is energy conserving, but will perform as well or better than Maxlife or Castrol HM?

Also, as one of you indicated it has synthetic attributes to it, so that being said...will the 10/30 flow just fine in my Lumina which recommends 5/30 for under ZERO degree temps?

Oct 9, 2005 | 02:21 PM

ford390gashog

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The 10w-30 is not near the oil that the 5w-30 is per their spec sheet The Viscosity rating at 100C means it is towards the thinner end of the viscosity range than most HM oils which are generally at the thick end of the range. Mobil is putting more value in the build of their 5w-30 than other HM oils which is why the "Energy Conserving" rating.

quote from flash