Mobil EP 5W based on Group 2 and 3 oil?
- Thread starter dole
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Well first off there is no such thing as "Group III plus", that's a marketing blurb used sometimes to indicate a high VI base that's still a Group III all day long. Are you saying there isn't any GTL derived Group III? That's not surprising since ExxonMobil does not produce GTL based stocks. But that doesn't mean the Group III bases the do use don't have a similar VI and low contaminates as do GTL stocks. This is a good illustration of how trying to predict future performance of an oil based on a SDS is not valid.
There is no indication that this product is "going downhill without break" from what you've posted.
There is no indication that this product is "going downhill without break" from what you've posted.
I thought ExxonMobil had or was building a GTL plant.
They did have one in the past and one was planned but the plans were abandoned. I think cost was the issue. Consider the enormous cost of the Pearl plant. Plus the fact that lubricating oils are actually a small part of the plant output.
I haven't seen where one is currently planned, did you see something? That would be interesting. EM seems to be more interested in other alternatives to produce high quality Group III bases.
Right, that
Right, that is indeed what I meant, as in the Shell oil, the PurePlus.
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The XOM GTL plant was canceled and they pivoted to buying their GTL from Shell instead. You're correct that the EP line, at least in 0W-20, went to utilizing GTL, having switched away from a larger percentage of PAO. That change occurred when the label changed to "Triple Action" a few years ago.
I'm using EP HM 5W-30 right now and was also under the impression that it contained GTL, but I'm having the same realization as you that it apparently doesn't. Either way, I'm not losing sleep over it. Mobil makes a great product and however they achieve their results is up to them. I'm not a professional formulator. I'm happy with the product and will continue to use it.
I'm using EP HM 5W-30 right now and was also under the impression that it contained GTL, but I'm having the same realization as you that it apparently doesn't. Either way, I'm not losing sleep over it. Mobil makes a great product and however they achieve their results is up to them. I'm not a professional formulator. I'm happy with the product and will continue to use it.
I began using M1 5-20 EP almost 15 years ago, not because I was interested in longer drain intervals but because I faintly recall reading here that it was a little higher up on the Mobil food chain from the standard M1. Just last month, I did my first-ever oil change on my new Subaru Outback 2.4T and I chose M1 0-20 EP. Interesting to hear that changes have been made to the formulation. Randomly/coincidentally, I also bought a jug of M1 0-30 ESP to try. I'll probably put that in next.
How exactly is Mobil 1 EP going downhill? Seems to work every bit as well in my Jeeps now as it did 7 years ago.
I am pondering the same oil switch to 0W-30 ESP, however, if EP remain the same quality, I would keep using it. That, remain, I don't know.
Some rumors, coincide with UOA showing viscosity drops quickly.
It's been that way through the SN+ version as well. They don't use a shear stable VM but it's clean. per Gokhan. I believe that is what he said.
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I've seen those UOAs too, showing shear. I bump up a grade anyway so it doesn't concern me in my case, but for those who run what's on the cap and may have fuel dilution issues, that would likely sway me to run ESP instead.
It matters why there is a viscosity deviation. The vast majority we see here are due to fuel dilution which is for the most part a simple dilution of a higher viscosity fluid by one of a lower viscosity. This is insensitive to brand.
The other issue is that most UOA on here are from a company that cannot properly measure fuel in the oil. They make an estimation based on flash point which has been demonstrated to be not only inaccurate, but wildly so at times. So for most UOA we see there is no way to distinguish a viscosity drop between mechanical shear of the VM and simple dilution. That same company has also shown they have issues measuring viscosity as well.
ExxonMobil does not use inferior VM in their products. Condemning a product for “shear” based on the majority of useless information seen here is unwarranted.
understood.
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