Oil cooler lines into oil filter adapter question

IMV8N · Jun 17, 2024

1996 GMC K1500 5.7 V8.

I pulled the oil cooler lines from my oil filter adapter but didn’t mark them when I pulled them. I notice on the oil filter adapter that one inlet is marked IN and the other is maker OUT. Can anyone tell me which lines running from the radiator go into which inlet on oil filter adapter?

GoToGuy · Jun 17, 2024

Upper hole to upper cooler , lower hole to lower cooler.
Kinda no brainer, the lines don't cross. Ya know , like don't cross the laser beams.

movietvet · Jun 17, 2024

I don't know but will ask. Are they two different sizes?

GoToGuy · Jun 17, 2024

Fittings the same just different lengths.

solaralexx · Aug 2, 2024

Hi, I just ran into this question myself - below diagram is from page 6B-38 of 1997 FSM. It shows the lines crossing - upper radiator fitting to lower oil cooler adapter (IN) fitting. I haven't checked other years.

You must be registered for see images attach

GoToGuy · Aug 2, 2024

The K model four wheel drive uses the angled or horizontal oil filter cooler adapter with smaller filter, PF52. As the question was related to a K1500 that's the answer. As shown in the diagram . Note the cooler line routing on the four wheel adapter on the 4.3 , using the PF52 filter. Same adapter.

You must be registered for see images attach

solaralexx · Aug 2, 2024

OK, that makes sense, thanks!

GoToGuy · Aug 2, 2024

kdawg646 · Aug 5, 2024

IMV8N said:
1996 GMC K1500 5.7 V8.

I pulled the oil cooler lines from my oil filter adapter but didn’t mark them when I pulled them. I notice on the oil filter adapter that one inlet is marked IN and the other is maker OUT. Can anyone tell me which lines running from the radiator go into which inlet on oil filter adapter?

I know I’m late to to show but you want your out line to go to the top of the cooler, just like with your coolant, out goes to the top, something to do with cooling efficiency, it just works better that way

movietvet · Aug 5, 2024

kdawg646 said:
I know I’m late to to show but you want your out line to go to the top of the cooler, just like with your coolant, out goes to the top, something to do with cooling efficiency, it just works better that way

Welcome to the forum from Oregon and thanks for the explanation.

Oil cooler lines into oil filter adapter question

IMV8N

Newbie

GoToGuy

I'm Awesome

movietvet

Supporting Member

GoToGuy

I'm Awesome

solaralexx

Newbie

GoToGuy

I'm Awesome

solaralexx

Newbie

GoToGuy

I'm Awesome

kdawg646

Newbie

movietvet

Supporting Member

Similar threads

Latest posts

Staff online

Members online

Forum statistics

Share this page