READ THIS IF you use Redline oil and Puralator

Speedy · 03-02-2012, 01:02 PM

Quote:

Originally Posted by dawudih

Pure 1 oil filter IS missing the bypass valve, take one apart if you don't beleive it (it's a little themostatic spring I think).
Elevated ZDDC in RedLine oil does burn up (eventually) the cat; but it also provides the extra protection that later oils (1998'ish - present) do not so it's worth it to me...

Since someone brought this thread back from the dead.....

I wish folks would do some research before posting incorrect information and starting internet rumor.

Purolator oil filters DO have a bypass valve as well as an anti drain back valve. They're one of the best oil filters for the money you can buy. Matter of fact, I don't know if you can even find an oil filter without a bypass valve anymore.

It's spring loaded steel and can be seen in the picture of a dissected PureOne filter below.

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