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Hyundai Santa Fe oil filter drain-back valve #4117168 06/06/16 07:02 PM
Joined: Sep 2013
Posts: 2
Intertype Offline OP
OP Offline
Joined: Sep 2013
Posts: 2
2015 Santa Fe with 3.3L engine. Oil filter is a cartridge. Why doesn't the anti-dreain back valve in the oil filter keep oil in the filter holder until the filter is pulled out? Why is the filter holder empty of oil when the cap is removed? Doesn't the oil pump have to fill the filter before oil is available to the critical parts of the engine?

Re: Hyundai Santa Fe oil filter drain-back valve [Re: Intertype] #4117231 06/06/16 07:58 PM
Joined: Jan 2009
Posts: 2,510
Klutch9 Offline
Joined: Jan 2009
Posts: 2,510
If it's designed anything like the cartridge setup is in my Kia 3.8L, yes, that's how it works. I always noticed the same thing, and that after sitting for awhile, the oil pressure light took a few seconds to turn off. Dealer told me this was normal, and even tested it on other vehicles with the same motor. Timing chain is a bit noisy until pressure builds, but that's normal considering that the timing chain tensioner is fed by oil pressure.

Why they did it this way, I have no idea. But the motor still purrs with nearly 100k miles.

'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
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