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K&N not recommended by chevy!

25647 Views 70 Replies 41 Participants Last post by  carbon419
ive talked to chevy service department, he said they do not recommend k&n products because of the oil in it, i had one in 5 diff. vehicles and never had a problem. K&N says it will not hurt a chevy and stand behind there warranty policy. So my question is why does chevy seem so against K&N or any oil based filters, or air intake product. I also asked if they recommended air intake systems and they said they did but it was the ones made by GM , but they dont make anything for the cruze! So whats your thoughts?
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Two reasons why GM doesn't like the K&N...

1. Because they're known for coming over-oiled, and they're known for getting that oil sucked into the MAF sensor, and causing it to have to be replaced.

2. Because GM is on the hook for the warranty for 100k miles, and the K&N filter lets ~100 TIMES as much dirt through as the AC Delco filter does... Believe it or not, dirt/dust does add wear to turbos, valves, rings, cylinder walls, and everything that the oil touches... Speaking of oil, the OLM then becomes "optimistic" when the oil gets bunches of dirt in it to plug the filter, as well as wear on the engine, if it's small enough that the filter won't catch it...

Yeah, for most people, they won't see extra wear and such, but if you drive on gravel roads a lot, or in dusty environments, there will be a shortened engine lifespan resulting from the extra dirt getting through...

I don't believe this many of you still haven't seen the Spicer SAE filter test? ****, even by their own product data on their own website, the K&N only filters 96% of the dirt out of the air. That sounds good until you find out that the AC Delco filters out 99.93% of the dirt, which means the K&N Lets in 100 TIMES the amount of dirt as the stock filter.

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