RodRam
Senior Member
RodRam
Recently disassembled a Fram Ultra XG10060.
This filter does incorporate a compression coiled spring for the relief valve.
The compression spring is located under the nylon plunger.
The coil spring and plunger are supported by a leaf spring.
The purpose of the pre stressed leaf spring is to function as an anti rattle device to keep the filter media positioned in the can and not the relief valve spring.
To my knowledge all oil filters with an internal relief valve incorporate a compression coiled spring.
Wasn't me, only filter I took apart was a royal purple 10-48 , as to coil springs in oil filters the bypass system of most all have the small internal coil inside the stamped steel spring, the other type uses a larger stronger coil spring. Both types also hold pressure on the internal components including the anti drain back gasket to keep everything in place. the fram and all others in the video I posted have stamped steel anti drain back springs except for wix xp and the KN. These have the bigger coil springs. Both types of filters work fine I and most people that understand the mechanics of oil filters prefer the coil spring setup like in wix xp over the cheaper stamped steel.
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