All right well I'm just taking away from it that Amsoil holds up in the face of a fuel diluting monster with acceptable OCIs (>5000 miles) while an OTS API spec oil (M1 AFE) crumbled at half the mileage.
Switching from 0w-20 to 0w-30 experience
- Thread starter MuzzleFlash40
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fuel dilution can vary at different times of the year, as in cold temps your engine runs a richer gas/air mix, and creating a situation for dilution in the engine, the condition of a dirty air filter can even add to this, driving with a heavy foot can also contribute to dilution & excessive idling times, , dirty injectors too & bad/stuck rings . the brand of oil can vary with results with the base stocks used. Amsoil among others that incorporate PAO etc can help ,a slightly higher viscosity in a fuel diluting/burning engine helps. lower oci is a given.
Then what’s the point of euro oils? Why does everyone love M1 ESP 0w-30? So now magically all oils are crap vs fuel dilution? You can put M1 AFE and ESP 0w-30 in 1 car same mileage, climate etc and ESP will dominate. Same can be said of comparing Kirkland 5w30 vs HPL 5w30 and I can guarantee you HPL and ESP will be have way better viscosity on sample.
Yezzzz, all oil crap out with fuel dilution, it is just physics of mixing fuel and oil. Not all 0w30 oil are the same, the mobil 1 AFE 0W30 is at the low end of 30 viscousity, meanwhile thr 0w30 ESP is at the higher end, regardless it is group iii or PAO dominance.
The same thing applies for 0w40 M1, at the thinner side of 40 weight.
ACEA or DexosD oil standard tends to handle soot and radicals better because it is design to work on diesel cars too. Meanwhil, API SP standard or Dexos 1 is only for gasoline.
We must discuss things with clear reference or starting point. Comparing the virgin and used oil, not just accross brands.
The same thing applies for 0w40 M1, at the thinner side of 40 weight.
ACEA or DexosD oil standard tends to handle soot and radicals better because it is design to work on diesel cars too. Meanwhil, API SP standard or Dexos 1 is only for gasoline.
We must discuss things with clear reference or starting point. Comparing the virgin and used oil, not just accross brands.
4WD
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However - HPL’s leader indicated that if he didn’t make his own super lubes - he’d run Mobil 1 0W40 … (which they have tested) …
4WD
$50 site donor 2025
Unfortunately - you have no idea what’s in any formula …
Or what anyone is testing …
It’s meeting several stringent approvals - does not need your’s …
Really, is today's "version" inferior somehow?
I’m not commenting on the relative quality of either formulation. I’m simply stating that the testing was done on a formula you can no longer buy.
We do know that the base oil formulation changed. Maybe it was a lateral move. Maybe not. Maybe it’s even better. I don’t know that HPL has re-tested it.
Everyone keeps talking about what Dave at HPL said about an oil which you can no longer buy. I think it’s important to point that out.
If you’re making a decision based on approvals, that’s fine. But that’s a different argument.
4WD
$50 site donor 2025
You think any formulation stays the same - even at boutiques …
It’s a supply chain world …
Which oil are you referring to that was so impressive?
I'll save you some trouble.
Me: M1 0W-40
You: It has x, y, and z approvals. Why are you trying to read the tea leaves on the SDS?
Because it's what we do here.
Was never trying to argue that it's not a good oil. Just saying it's changed since it was evaluated at HPL!
Sure. Like your picture there’s a lot of fantasy there.I'll save you some trouble.
Me: M1 0W-40
You: It has x, y, and z approvals. Why are you trying to read the tea leaves on the SDS?
Because it's what we do here.
Was never trying to argue that it's not a good oil. Just saying it's changed since it was evaluated at HPL!
4WD
$50 site donor 2025
Wow - And you go after someone else labeled a Troll … and say they high jacked a thread. On ignore.I'll save you some trouble.
Me: M1 0W-40
You: It has x, y, and z approvals. Why are you trying to read the tea leaves on the SDS?
Because it's what we do here.
Was never trying to argue that it's not a good oil. Just saying it's changed since it was evaluated at HPL!
4WD
$50 site donor 2025
I’m tired for sure …
So you're saying there's been no formula change to M1 FS 0W-40 since API SN?
Formulations change all the time. With or without an API license change and within or outside Annex E interchange allowances.
You said “It's significant when formulations change, and what made the oil so impressive is removed”. I suppose I’m after what it was that was removed and made it no longer “so impressive”. I think one could make the argument that it is improved considering it now has BMW Longlife-01 approval which it lost for a while.
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