I would usually associate drain-back more with top end noise rather than a knock. But there seems to be good evidence that the filters do make a difference. Suppose it could be related more to the by-pass valve? Cold oil should shunt through the by-pass until it thins; if the by-pass fails to work right there would be oil starvation on a cold start.

You're right about the oil staying in the Neon filter, but believe you can still lose the oil from the galleries above the filter due to the pressure head if the anti drain-back valve fails to hold.

 

Bsd,
Thanks so much for the info, I had no idea that most of the Mopar filters were actually Fram products....

Well, I gues it's back to delco for me!!!!

Thanks for the info

Jeff
In a dry sunny Philly[sm=smiley29.gif]

 

Just remember that some other filter company is making that filter for acdelco. ACdelco doesn't make any of there own parts everything is made by other companies and relabled by acdelco. Still acdelco filters are 100 times the filter frams are.

 

My friend works for dodge, now i'm not sure that this is correct or not but he said the the lower end on the motors are made with a little extra play and that is what the noise is, and it is also why the bottom ends are so strong on the motors. Now that does make some sense but i'm not sure.

 

It does kinda make a little bit of sense at least about the part of being extra play. Because that is what is causing the noise. As for that being the reason for why the bottom is so strong.... I wouldn't think so but maybe.

 

anyway it goes they all do it and its normal.

 

I have a 2004 SXT with just over 7000 miles and I am getting that same knock -- it worries me that some damage is being done to the engine during this period. Any have any idea if there are any long term side effects and if there is any effective solution? I am about due for an oil change --- which I will be performing. I don't have a place where I nearby where I can purchase delco parts -- any good alternatives?

Bud

 

Don't worry about that noise its harmless almost all neons do it and most have done since they were new and there is a lot of them out there with well over 100k on them and they are fine.

 

Yeah use Mopar, since Delco is a GM company for GM vehicles

 

Just don't use mopar filters cause most of them are made fram