Difference between PP and PP High Mileage?

[Dave1027]

I went to WalMart yesterday to pick up a jug of PP 0w20 to do my car's annual oil change. To my surprise they did not have my favorite PP 0w20 on the shelf but they had PP HM 0w20. So then I had a decision to make. Should I go ahead and get the PP HM or get regular M1 0W20? I have never used a HM oil.

So my question is, what is the actual difference between PP 0w20 and PP HM 0w20? Is it the exact same except for a seal conditioner added? Could there be any down side to the difference?

 

[Garak]

If it meets the specifications your vehicle requires, I wouldn't worry in the least.

 

[SavagePatch]

PPHM is thinner for grade than PP.

 

[SubieRubyRoo]

@Savage: By like 0.3cSt@100*C, or in reality absolutely nothing you nor your engine will ever notice. As Garak said, if it meets your specs, it will be fine, end of story.

 

[fdcg27]

Well, the label is different.
Other than that, I'd doubt that there would be any difference in the oil that would matter.
I'd use either without a second thought.
All finished motor oils have seal conditioning agents. The HM might have more and might not.

 

[littleant]

I tried PP HM 5w30 for the first time this brutal winter in my 02 jeep 4.0 and will never look back. This was the best flowing oil at low temperatures (-30) then any other oil i have used. Almost instant oil presure. Also used a fram ultra on the jeep for the first time XG8A. Sticking with this combination.

 

[buck91]

Originally Posted by SavagePatch
PPHM is thinner for grade than PP.



Wow, really? Seems counter intuitive.

 

[PimTac]

Originally Posted by buck91
Originally Posted by SavagePatch
PPHM is thinner for grade than PP.



Wow, really? Seems counter intuitive.



The difference is minute.

 

[KneeGrinder]

It does not meet Dexos 1, or gen 2, it has much higher calcium, it has almost 3 times as much moly. Depending on your vehicle it might not matter at all, I use PP HM 0W20. But I paid as low as $7.00 per jug for also. I would use a PP 5W30 Dexos G2, or a PP HM 5W30 if I had to pay full price for it.

 

[SavagePatch]

Originally Posted by SubieRubyRoo
@Savage: By like 0.3cSt@100*C, or in reality absolutely nothing you nor your engine will ever notice. As Garak said, if it meets your specs, it will be fine, end of story.


I agree. Perhaps I should have elaborated a bit but my main point was to dispell the common belief that high mileage oil is thicker than regular oil of the same brand. That isn't true anymore even if the differences are tiny.

 

[JohnnyJohnson]

The biggest noticeable difference is more than likely the label

 

[PimTac]

Or it must be that new "various low viscosity base oil" they use now.

 

[dave1251]

Originally Posted by KneeGrinder
It does not meet Dexos 1, or gen 2, it has much higher calcium, it has almost 3 times as much moly. Depending on your vehicle it might not matter at all, I use PP HM 0W20. But I paid as low as $7.00 per jug for also. I would use a PP 5W30 Dexos G2, or a PP HM 5W30 if I had to pay full price for it.



It can't have much higher calcium or it won't meet SN+.

 

[KneeGrinder]

Originally Posted by dave1251
It can't have much higher calcium or it won't meet SN+.


Forgot about SN+, I have not seen a VOA, or a UOA on the new formulation. I have 20+ jugs of PP HM 0W20 SN, and its about 2000ppm calcium. Nothing I own needs SN+, nothing I own even needs SN, but there is nothing wrong with using it.

 

[dave1251]

Originally Posted by KneeGrinder
Originally Posted by dave1251
It can't have much higher calcium or it won't meet SN+.


Forgot about SN+, I have not seen a VOA, or a UOA on the new formulation. I have 20+ jugs of PP HM 0W20 SN, and its about 2000ppm calcium. Nothing I own needs SN+, nothing I own even needs SN, but there is nothing wrong with using it.



Well then don't state it has much higher calcium when it can't. If you can't handle being corrected then don't post false information.

 

[53' Stude]

Dave1251: I believe aquariscsm and I discovered PPHM has more moly than regular PP. I did a VOA of PPHM also

 

[KneeGrinder]

Did I say I could not accept being corrected?

 

[BLND1]

Originally Posted by PimTac
Or it must be that new "various low viscosity base oil" they use now.

"Whatever's left over base oil."

 

[Slick17601]

Originally Posted by KneeGrinder
It does not meet Dexos 1, or gen 2, it has much higher calcium, it has almost 3 times as much moly. Depending on your vehicle it might not matter at all, I use PP HM 0W20. But I paid as low as $7.00 per jug for also. I would use a PP 5W30 Dexos G2, or a PP HM 5W30 if I had to pay full price for it.


Is there a VOA verifying the 3x moly over PP?

 

[Dave1027]

I just found this thread https://bobistheoilguy.com/forums/ubbthreads.php/topics/4656479/Has_anyone_ever_done_a_uoa_on_ that states that cleaning agents are removed and seal conditioners added in the High Mileage version.

My car does not burn a drop of oil but the compression rings have a tendency to get sticky so I'm not going with the HM oil.