Well I've had a idle cold and restart noise for the last three years off and on. Best way for me to describe it is a faint lifter noise that goes away with a rev. I'm excited to say its gone for the last two days, I changed the oil Sun. and put a ph8a filter on. Its the small block ford filter fl1a or ph8a ford/fram. It must flow better I had to add a extra half quart when I was done. So it may help others it may not.

 

is that filter bigger than stock xj

 

It's 2-3" longer.

 

just changed mine, FL1A motorcraft.

 

Where is all the oil all over the engine? Is this a 4.0?

 

Used ph8a filters for years on my 92xj without any problems and changed oil every 3k but am hearing fram reg. oil filters can have problems if youre interested I have switched to purolator standard size for classic are l14670 and pure 1 pl14670 the large size classic l300001 pure 1 pl300001 hope your clatter stays away but larger filters ONLY hold more oil I am using l14670 with valvoline 10w30 maxlife synthec blend oil at walmart $16 for 5qts. now driving 2000xj since July with 102k just my 2cts.

 

larger filters do not filter better, but last longer.

 

Thats all I ever use on our G/C 4.0. Buy the Motorcraft when they go on sale. Or else I use a napa gold filter, Ford mount. Better anti-drianback.

Mark G

 

That's one of the reasons we bought it......most of the oil was on the inside.

 

gonna try this i have the same noise on my 90 xj

 

I was thinking that maybe it flows more at idle or something my overall engine noise at idle is almost zero now.

 

Changing the oil could make a diff in lifter noise but I don't see how the oil filter could make any diff. A longer filter simply has a little more filter surface area (to hold/catch more stuff) and a little more internal volume (that possibly allows for more oil cooling) than a short/stock filter.

 

im using a K&N filter and it works great! about to change it again with some castorl synthetic

 

Amazing what stuff looks like when you take care of it.lol