Mobil 5w-30 synthetic too thin?

[fnbrowning]

Hello!

I remember reading some comments recently about Mobil 5w30 synthetic fairing poorly on tests. I'm not sure if I read it here on bobistheoilguy. I do think that the info was regarding GM using it in the LS1/LS2 engines.

I'm having trouble finding the information with the search engine. Does anyone remember discussions or threads with oil anaylsis, or links to off-site info?

Thanks!

 

[ruking77]

I don't know that it is a matter of it fairing poorly, or some folks had a preference for the higher priced designer oils. (Redlilne, Amsoil, etc) You probably know this but Mobil 1 5w30 is oem fill and recommended on Corvette engines since the C5 model 2001-2004 that I am aware. The alternate owners manual viscosity is 10w30. They both meet the GM 4178M specification.

 

[JHZR2]

It all depends on the application. In my 98 S10 4.3L v6, 5w30 does not produce good results. Due to thickness or something else? I cant say. In my mother's 97 plymouth breeze, it does excelently.

This is why UOA is so important to oil choice.

JMH