2011-2015 Chev Cruze fix low fuel economy/MPG without a check engine light 60k to 100k maintenance

Excuse my ignorance but what does that intake like "cone shape filter do" .thanks in advance.

I’ll do all three I have 75k miles. What brand sensors did you get are cheap ones On eBay good? Thanks for the video

Good video. I did my crankshaft seal about a month ago myself. Went ahead and replaced the belt and tensioner also

Where did you get that catch can from?