Just recently bought an airaid cai for my 4.2 and I got the oiled one instead of the dry. What was the benefit of getting the dry one which was a little more expensive? Thanks in advance

 

Dry every time. Better filtration efficiency and still flows copious amounts of air. Why have the hassle of oiling, possible MAF contamination, and poorer filtration? I'll use S&B's filter's as an example: their dry filter does a .2% better job filtering compared to their oiled filter. And a naturally aspirated 5.4L can only use 381 CFM, so any air above that is useless. A 4.2L will use even less CFM, so while a filter can flow large amounts, it's never used.

 

Thanks for the reply. The guy I talked to on autoanything said that the oiled would be better. Wish I would have asked here before I ordered.. Oh well. My next question, excuse my ignorance, but even though I ordered the oiled one, can I just use a dry filter instead of an oiled one?

 

^ Sure can. Just find a filter with the same type and diameter of inlet, and one that will fit in the shroud area and it'll be good to go. Amsoil nanofiber, aFe Pro Dry, Volant Powercore, and the AEM dry are some of the better dry filters.

 

Great, thanks a lot! I appreciate the help!

 

I agree with Otto. I have seen a lot of dead MAF due to K&N Filters

 

AIRAID offers a SynthaMax NON-Oiled Filter that offer's a 99%+ Efficiency Rating.





Thanks,
David

 

So I can purchase this one and replace it with the filter from the oiled kit no problem?

 

Hello Ford Built Tough,

Absolutely. The P/N # 701-420

Thanks,
David