# Post ur Oil and Filter here!!!

**URL:** <https://forums.speedlife.net/t/post-ur-oil-and-filter-here/120742>\
**Category:** SON240sx Automotive\
**Created:** [December 24, 2008, 12:21am UTC](https://forums.speedlife.net/t/post-ur-oil-and-filter-here/120742 "2008-12-24T00:21:19Z")\
**Posts on this page:** 1\
**Showing post:** 44

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**Author:** ![jdm-silvia](https://avatars.discourse-cdn.com/v4/letter/j/e19adc/32.png) [@jdm-silvia](https://forums.speedlife.net/u/jdm-silvia)\
**Post date:** [December 25, 2008, 11:50am UTC](https://forums.speedlife.net/t/post-ur-oil-and-filter-here/120742/44 "2008-12-25T11:50:34Z")

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> [@"DONKS"](https://forums.speedlife.net/t/donks/19640/17):
>
> I did a who shitload of research on oils before i decided which to use in my car.
> 
> Its in an all aluminum V8 (LS1), but im guessing it would be just as good for any other motor also.
> 
> Heres my findings:  
> Mobil 1 Synthetics - Stain the internals. After 20k miles of this sh!t in my truck (iron V8, but i see it on all aluminum engines i see) the crank, rods, block etc all come out with a nasty brown tint on them.
> 
> Castrol 0w30 - The german stuff (it says made in germany on the back, the US stuff is no good) is amazing. I picked up 6rwhp in my v8 with it. Its a yellow-green coloured oil, its down right amazing. 15k with it, id never use another oil again. Came out clean on all 5 changes, motor feels like it revs up easier etc. I use it with a Fram synthetic filter.

so are using the Castrol _0w30_ for ur truck right? n am guessing during winter? am honesly thinking going with Castrol/Royal but 10W30 during summer

thanks for info sheldon

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