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Originally Posted by JFP in PA
The problem with 0W-40 Mobil 1 is the product’s inability to hold up under high temperature/high shear environments and “stay in grade” as demonstrated by used oil analysis. While the IMS from the factory is a sealed unit and its problems are not directly related to the oil’s performance (other than to the fact that the low viscosity of the 0W Mobil oil could hasten the oil intrusion into an already failing IMS bearing once the seals start to crap out), a lot of other engine components are directly affected by the product’s poor performance and limited ability to “go the distance”. In light of the fact that there are better oil selections available, the continued use of clearly inferior oil seems questionable……
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Tired of red but I appreciate your input on this board.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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