# calling all LS1 owners... **URL:** \ **Category:** Shift518 Automotive\ **Created:** [June 14, 2009, 4:13pm UTC](https://forums.speedlife.net/t/calling-all-ls1-owners/244753 "2009-06-14T16:13:16Z")\ **Posts on this page:** 1\ **Showing post:** 25
**Author:** ![Shady](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@Shady](https://forums.speedlife.net/u/Shady)\ **Post date:** [June 15, 2009, 8:34am UTC](https://forums.speedlife.net/t/calling-all-ls1-owners/244753/25 "2009-06-15T08:34:36Z")
> [@What don't you like about your car?](https://forums.speedlife.net/t/what-dont-you-like-about-your-car/19355/46): > > 5w30 is not too light IMO. I wouldn’t go any heavier than 10w30… see if you can find something like this: > > [http://jlttruecoldair.com/zencart/index.php?main\_page=product\_info&products\_id=23](http://jlttruecoldair.com/zencart/index.php?main_page=product_info&products_id=23) > > that should keep the oil out of your PCV system. It’s a problem on the boosted cobras too. I know when I took my intake off to swap over the K&N there was oil in the TB. Dunno if they have em for Chevy’s but if they’re the same size it’ll work. 5w30 seems like water in high temps… I mean granted its fine but i dunno I’d rather use a heavier oil and not have to worry about it breaking down and burning off really fast --- _[View the full topic](https://forums.speedlife.net/t/calling-all-ls1-owners/244753)._