If I let the truck sit over night then pull the filter it's always only half full, however if I pull it after sitting just a little while it will run out while unscrewing.

 

But a fleetguard, baldwin, Cat, Donaldson or even an a/c delco filter... but never waste money on a Fram. The reason the filter was only half full is due to an inferior filter design with a faulty anti-drain back valve. I cut a brand new Fram open years ago, the end caps were made out of plain old cardboard!!!..

 

Anti Drain back valve is not needed on our engine. Even the Fleetguard LF16035 doesn't have one.

As for Fram.... Stay away, far away.

 

I agree with the above comments.

 

Interesting information, and quite helpful.

Thanks all!

 

The Amsoil EaO80 does not have an anti drain valve either. I just filled my filter this morning through the small holes, not the center return hole.

 

I've heard that the by-pass valve in a Fram filters are made of plastic (probabily why they break more often and cheaper to buy) and other brand are made of metal.

Maybe a filter specialist would confirm that!

I speak and write french so sorry for my english writting...

 

I agree. I only use fleetguard stratapore oil filters and when I change oil I get the truck up to operating temp open the fumoto valve and do other things until the truck cools off completely before I even think about pulling the oil filter off. This allows the oil to completely drain and it will siphon out of the filter enough that I don't spill a drop.

 

+1 on the Fleetguard and we do not have an antidrainback valve.

This has been discussed in length years ago on the 12 valve board. The turbo oil line takes a direct feed off the top of the filter housing and it can either let air into the top of the filter or cause oil to siphon out. The wet filter element will wick oil up and out until the vacuum is broken and then it stops, usually with the filter around half full. This is not a problem and does not affect the engine on start up. With a couple of walmart shopping bags over the filter and allowing a few minutes for the drain back to take place you can get a clean oil change pretty easy.

 

Regarding the overheating problem, at those engine temps the fan coupler should be fully engaged and the fan will really roar.

Has the truck set any codes? I'd also check out the harness (you can only really see it from underneath) as they have known to chafe through.

Lastly, I believe the dealer can run a test with the computer by setting the fan clutch to fully engaged, and reading what speed the fan is running at.

 

I'm sure the 180 T-stat will help; I put the 180 in every spring and the 190 in every fall.
Last year, I pulled my Rad out and washed the exterior of it with Simple Green and Brake cleaner more than a few times; it took quite a few times to get all that road gunk out of the fins.
While you have it out, use some descaler that is safe for aluminum to clean out the inside of the rad. Let it sit in there for a while and make sure you flush it out both directions.

 

I took it into the dealer today to fix a u-joint, reset the codes, and run a diagnostic on the ecm and a factory recall.

It was 92 degrees and the temp didn't get over 180! Guess it was largely the thermostat after all. Truck seemed to run better than ever all of a sudden. Spent a lot of time Sunday cleaning connections, tightening grounds, intercooler clamps, etc. etc.

Hopefully load up this weekend and try the pass for the real litmus test.

 

hhmmmm maybe its the high humidity here in Texas... My Fleetguard LF16035 is always full... maybe I just havent experienced it draining down yet.. Only working on oil change #8 with this truck...

 

My filter is usually about an inch below the threads after the truck has cooled completely.

 

I thought an anti-drain back valve was only really needed when the filter is mounted on its side or upside down? As for Fram, its kinda weird. I would never use a fram filter on anything...yet the race car only gets a Fram. Its amazing, cut a fram racing filter open, and it looks night and day different than any of their garbage street filters.