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Fram Ultra Bypass Valve Spring Life #4109703 05/29/16 11:32 AM
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Digital2k2 Offline OP
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Does anyone think the bypass valve spring on a Fram Ultra would weaken over time with everyday vehicle use not exceeding 15k miles over about three years?

I'm thinking severe service case of one mile trips and shut off, only to return one mile back later at least 5 times a week. So the bypass valve is getting a lot of use. There are of course longer trips once or more a week just to heat up the oil to operating temp to burn off condensation, but I'm just curious about the bypass valve's life considering severe service and drain and fills keeping the same filter in use for possibly a few years.

Re: Fram Ultra Bypass Valve Spring Life [Re: Digital2k2] #4109718 05/29/16 12:01 PM
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2015_PSD Offline
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Jim Allen did some testing (search for it) to show that bypass events happen far less than we think. He also either visited or collaborated with someone from FRAM that stated the bypass valve is tested for over 1 million cycles. Also, consider that some filters may be in the box for nearly a year before they are sold. I do not think you have anything to worry about.


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Re: Fram Ultra Bypass Valve Spring Life [Re: Digital2k2] #4109720 05/29/16 12:02 PM
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AirgunSavant Offline
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I never had an issue and I have to do that because I have a few houses and an office just a few miles apart and do that daily.

Re: Fram Ultra Bypass Valve Spring Life [Re: Digital2k2] #4109730 05/29/16 12:27 PM
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goodtimes Offline
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I don't know why anyone would think the Fram bypass spring would weaken, when it is such a common type of bypass spring on many makes, and no one says the others weaken. The Toyota bypass is almost identical to the Fram in design function and size. I even interchanged them on some cut open filters, and they fit perfectly on each other. The spring is quite large actually, and I can't see any reason to think it would fail.

Re: Fram Ultra Bypass Valve Spring Life [Re: 2015_PSD] #4109756 05/29/16 01:04 PM
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Digital2k2 Offline OP
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They're tested for 1 million cycles? Very interesting!

I just stated the Fram Ultra because it's the current filter in use and is supposed to be a high quality long duration filter. So most filters within the same application type use virtually identical bypass valve springs?

Thanks for the replies smile

Re: Fram Ultra Bypass Valve Spring Life [Re: Digital2k2] #4109842 05/29/16 03:22 PM
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ZeeOSix Offline
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You have nothing to worry about.

Re: Fram Ultra Bypass Valve Spring Life [Re: Digital2k2] #4110154 05/30/16 12:02 AM
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DoubleWasp Offline
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When cutting open my 20k mile XG2's, I have never found a spring problem. Thing was stiff as a board.


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