Originally Posted By: Brian Barnhart
Originally Posted By: Motorking
Hello,
I read the entire thread so I know what has transpired. Couple things, lifter noise on start up is causing by the lifters bleeding down. You changed the filter (
and oil) and the noise went away. It could have been the oil. The Ultra filters have less than a 2psi pressure drop and have better flow than cellulose/synthetic glass weaves. Beside that, oil flow through the filter is going to be the same when cold or hot, the oil pump doesn't change flow based on outside or oil temp. It is regulated by the pressure relief valve and the bypass in the filter mount only opens if oil cannot flow through the filter. I would be happy to evaluate the filter but you have to go through the normal claims process. Email
[email protected]. They will send you a claim kit to send the filter in. They will lab test it and report back to you.
Gee, I read the whole thread too.
Saw that the last two starts were quiet after the Fram was switched out without an oil change. I doubt it's the oil per your suggestion. The evidence at this point is much stronger for a bad filter or a marginal application for that particular filter design on that particular engine.
I agree with Brian Barnhart ... It seems that the problem that occurred points toward the filter (either a bad/defective filter or a problem with that filter on Trav's particular application) since the only thing he changed was the filter (changed from the FRAM filter back to a NAPA Gold filter), which resulted in the noise going away.