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Message: That Mobil engineer was either mistaken, blowing smoke, or telling near truths
Changed By: grant
Change Date: February 10, 2011 08:05PM
That Mobil engineer was .. ahem, neveither mind.staken, blowing smoke, or telling near truths
Change Date: February 10, 2011 08:05PM
That Mobil engineer was .. ahem, neveither mind.staken, blowing smoke, or telling near truths
Mobil stopped even using Group IV base stocks years ago, claiming they were no longer needed. And dancing like crazy in public.
I cant say more. read between the lines above.
Base stock quality is why syntheitcs can have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together.
We dont know all the facts of course. But we do know two things:
1. Mobil's base stock appears to be in the phase of being cost reduced.
Mobil stopped using Group IV base stocks years ago, claiming they were no longer needed. And dancing like crazy in public.
They also have multiple M1 formulations at different price points Gold cap vs Red. etc. Marketing led formulations typically are not exceptional.
2. Longer chains are more viscous and shorter ones less so. Even when the parasitic variations (the original benefit of synthetics was molecular uniformity) are reduced or eliminated, the fact remains that an oil is not truly both 0w and 40w. It just meets the template by vary-ing less with temperature.
Base stock quality allows synthetics to have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together. Empirical evidence argues against that engineer.
Is it awful stuff? No. I'd use it. i did in the 986 for 2? years. But there is better stuff, including Mobil's own. Use 10w40. or mix 50/50 0w40 and 15w50 and have a nice 7.5w45. yes, it does work that way. we've seen results of 0w40 shear down. Its not guaranteed, but its also not debatable under tough conditions.
And its also not debatable that thicker oils hold up better under high temp and hgih pressure. On balance they don't flow as well, but do we need water at or above 10 deg F? Drive easy the first 2 miles- its a far better plan anyway.
Sadly, all the oil companies are moving from engineering to marketing. And all are dealing with OEMs' demands for free fuel economy. Its not hard to see why.
Grant
I cant say more. read between the lines above.
Base stock quality is why syntheitcs can have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together.
We dont know all the facts of course. But we do know two things:
1. Mobil's base stock appears to be in the phase of being cost reduced.
Mobil stopped using Group IV base stocks years ago, claiming they were no longer needed. And dancing like crazy in public.
They also have multiple M1 formulations at different price points Gold cap vs Red. etc. Marketing led formulations typically are not exceptional.
2. Longer chains are more viscous and shorter ones less so. Even when the parasitic variations (the original benefit of synthetics was molecular uniformity) are reduced or eliminated, the fact remains that an oil is not truly both 0w and 40w. It just meets the template by vary-ing less with temperature.
Base stock quality allows synthetics to have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together. Empirical evidence argues against that engineer.
Is it awful stuff? No. I'd use it. i did in the 986 for 2? years. But there is better stuff, including Mobil's own. Use 10w40. or mix 50/50 0w40 and 15w50 and have a nice 7.5w45. yes, it does work that way. we've seen results of 0w40 shear down. Its not guaranteed, but its also not debatable under tough conditions.
And its also not debatable that thicker oils hold up better under high temp and hgih pressure. On balance they don't flow as well, but do we need water at or above 10 deg F? Drive easy the first 2 miles- its a far better plan anyway.
Sadly, all the oil companies are moving from engineering to marketing. And all are dealing with OEMs' demands for free fuel economy. Its not hard to see why.
Grant
Original Message
Author: grantDate: February 10, 2011 07:39PM
That Mobil engineer was .. ahem, never mind.
Mobil stopped even using Group IV base stocks years ago, claiming they were no longer needed. And dancing like crazy in public.
I cant say more. read between the lines above.
Base stock quality is why syntheitcs can have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together.
Is it awful stuff? No. I'd use it. i did in the 986 for 2? years. But there is better stuff, including Mobil's own. Use 10w40. or mix 50/50 0w40 and 15w50 and have a nice 7.5w45. yes, it does work that way. we've seen results of 0w40 shear down. Its not guaranteed, but its also not debatable under tough conditions.
And its also not debatable that thicker oils hold up better under high temp and hgih pressure. On balance they don't flow as well, but do we need water at or above 10 deg F? Drive easy the first 2 miles- its a far better plan anyway.
Sadly, all the oil companies are moving from engineering to marketing. And all are dealing with OEMs' demands for free fuel economy. Its not hard to see why.
Grant
I cant say more. read between the lines above.
Base stock quality is why syntheitcs can have no VIIs at 5w30 and 10w40 grades. Its nearly miracle. Buy beyond that i am very suspicious, and when i see sludge and shear, i can put two and two together.
Is it awful stuff? No. I'd use it. i did in the 986 for 2? years. But there is better stuff, including Mobil's own. Use 10w40. or mix 50/50 0w40 and 15w50 and have a nice 7.5w45. yes, it does work that way. we've seen results of 0w40 shear down. Its not guaranteed, but its also not debatable under tough conditions.
And its also not debatable that thicker oils hold up better under high temp and hgih pressure. On balance they don't flow as well, but do we need water at or above 10 deg F? Drive easy the first 2 miles- its a far better plan anyway.
Sadly, all the oil companies are moving from engineering to marketing. And all are dealing with OEMs' demands for free fuel economy. Its not hard to see why.
Grant