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 Page 1 of 2 12
Username Post: Replacing Oil Cooler Lines        (Topic#180872)
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 10:19 AM - Post#1354482    

My truck suddenly developed a bad leak in the oil cooler line(s). No driveway leaks and no clues until suddenly my "Check Gauges" light came on and I noticed my oil pressure gauge was low. I immediately pulled in to a quick oil change place for a check. They looked underneath, had me start the truck and confirmed a leak. It was already down a few qts that quickly, so they added the needed oil. I then took the truck straight to a local shop that I've used in the past with good results.

My truck is a '93 K1500 with 135K. I have the regular oil cooling system with hard and soft lines to the radiator. Obviously, this could have lead to engine failure if unnoticed while driving down the freeway. Fortunately, I was in town and hadn't gone far. I still lost a good amount of oil. I didn't see this one coming, nor was I aware of the oil lines being a "maintenance" item.

The estimate to fix everything, parts and labor, comes to $625, for all new GM stuff. Parts were quoted $175.86, $189.42, and $84.00, plus a few dollars for clips, etc. I don't remember the individual names of each part included. Is this the norm for these trucks? They claim to have discounted the overall job $100.00 but it sure seems like a lot to replace "oil cooler lines". Bottom line it's gotta be fixed.

Thanks for any info.

Edited by Axelrod on 01-30-08 10:31 AM. Reason for edit: No reason given.

 
Bad Bowtie 
Valued Contributor
Posts: 4536
Bad Bowtie
Age: 42
Loc: TX
Reg: 07-04-03
01-30-08 10:30 AM - Post#1354496    
    In response to Axelrod

I read on here somewhere to NOT go back with the GM oil cooler lines. The aftermarket ones were CHEEPER and of BETTER lasting quality! Maybe the Hayden brand? I don't remember if it was the 1999-2006 or the 1988-98 Forum, but I'm sure if u search both u will find the thread I'm speaking of...
GMC. We are Professional Grade.

http://www.cardomain.com/id/2004VHO


 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 10:39 AM - Post#1354505    
    In response to Bad Bowtie

I did a search and found something on Dorman lines. My shop said nothing was available in the aftermarket but maybe I need more than just the lines?

 
someotherguy 
Moderator
Posts: 25571
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
01-30-08 10:40 AM - Post#1354506    
    In response to Axelrod

There's only two lines, so I wonder what that third part cost item is? And, the prices seem like list - but that's what you're stuck paying, if you're paying someone else to do the work. It's not a hard job; you might want to do it yourself.

Richard
94 C2500LD / 94 C1500 / 06 300C SRT8
Check out my truck shop projects


 
The_Hunter 
Contributor
Posts: 983
The_Hunter
Loc: Manitoba, Canada
Reg: 02-14-05
01-30-08 10:42 AM - Post#1354507    
    In response to Axelrod

When I put the 350 into my truck it had an oil cooler. My rad had no provision for it so I took it off and put a "regular" oil filter setup on it.
86 C10 Short Box

Computers are like air conditioners - They can't do their job properly if you open windows.


 
someotherguy 
Moderator
Posts: 25571
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
01-30-08 10:44 AM - Post#1354508    
    In response to The_Hunter

Excellent point and something to consider, based on where you're located. If you're not subject to extreme high temperatures, you might just remove the cooler. I also did this on my old '92 when I got tired of patching the oil cooler lines up.

It's also a very simple job; remove the filter, remove two bolts, and the cooling line adapter comes out. Then you'll need the insert for a "regular" (non-cooler equipped) filter setup, and the bolts for it. Any junkyard, a few bucks.

Richard
94 C2500LD / 94 C1500 / 06 300C SRT8
Check out my truck shop projects


 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 11:03 AM - Post#1354522    
    In response to someotherguy

Thanks for the quick replies. Seeing as how it's 9 degrees here with a minus zero wind chill factor and my garage is completely occupied with another project, I don't want to do this myself. Apparently, with the 4 wheel drive models, switching it out is not an option.

 
docs89gta 
Contributor
Posts: 232

Age: 43
Loc: Georgia
Reg: 10-18-07
01-30-08 11:05 AM - Post#1354524    
    In response to someotherguy

I noticed one of my lines leaking and a little oil residue around where it mounts to the oil filter location. I checked LMC Truck and i can get the lines for $24.95 each for a 95. I would check LMC Truck. They didn't offer a gasket kit for the oil cooler adapter, so i'm not sure where i am going to get those gaskets yet.

But check LMC Truck and they are cheaper.
95 Chevy Z71, 89 Pontiac Trans Am GTA, 75 Chevy Nova LN (sold)


 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 11:29 AM - Post#1354539    
    In response to docs89gta

I just called the shop, (I hate being a pest) but asked for clarification on what needs to be replaced. The aluminum housing of the oil adapter is where its leaking. Plus the rubber hoses are spongy and need to be replaced. So basically the whole assembly including hard lines is what's getting replaced.

 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 11:33 AM - Post#1354543    
    In response to Axelrod

ps: just wanted to add that I checked the LMC catalog online but couldn't find the schematic drawing of the entire oil cooler assembly. I did find the rubber lines but like I said above, in my case, it's slightly more involved.

 
someotherguy 
Moderator
Posts: 25571
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
01-30-08 11:36 AM - Post#1354547    
    In response to Axelrod

Pardner, if winter gets down to 9 degrees where you're at, I'd bet summer doesn't get too terribly hot. Unless you want to spend that money, I'd remove the oil cooler setup. If you want to put it back on later, there's nothing stopping you from doing it other than cost.

Not sure what you meant by 4WD means you can't switch it out? I'm no 4WD expert but I don't see why it would prevent going to a normal filter setup.

Richard
94 C2500LD / 94 C1500 / 06 300C SRT8
Check out my truck shop projects


 
CDAUSA 
Needs to Get Out More Member
Posts: 12906

Loc: Texas Panhandle
Reg: 12-31-01
01-30-08 12:03 PM - Post#1354563    
    In response to Axelrod

Just from what you said, and were told, I'll guess that you lost either the O-ring or gasket from the oil cooler adapter, common around here. Both are less than $5 in parts and all you have to do is remove the filter, remove two allen head screws, drop the adapter down and replace the parts then put it back up and tighten. You DO NOT have to remove the lines to do this, but wouldn't hurt to change them in the near future.

I put Dorman on and they have so far, stood the test. One was ~$19 and one ~$23.

If you had done the gasket thing on the adapter once and knew the process, I'd say it would take max------10 minutes.

This is also assuming the adapter isn't cracked itself, or some other problem with it.

 
CDAUSA 
Needs to Get Out More Member
Posts: 12906

Loc: Texas Panhandle
Reg: 12-31-01
01-30-08 12:13 PM - Post#1354571    
    In response to someotherguy

  • someotherguy Said:
Pardner, if winter gets down to 9 degrees where you're at, I'd bet summer doesn't get too terribly hot.



Does that mean........as long as you don't live in Texas?


 
camaro865 
Very Senior Member
Posts: 1192
camaro865
Loc: Massachusetts
Reg: 10-13-03
01-30-08 12:20 PM - Post#1354574    
    In response to CDAUSA

i'll fix it for 600 bucks
03 silverado 1500 HD 6.0 4 door crew cab 4x4


 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
01-30-08 12:20 PM - Post#1354576    
    In response to CDAUSA

I replaced the two cooler lines about a year or so ago. They started leaking again, right at the point where the metal hose is crimped to the rubber portion. These were after market triple crimped ( sounds like BS) hoses. I just removed them and blocked the two outlet ports in the oil filter adapter and I replaced the "O" ring as well. No more leaks. My truck is 4wd with the 8600# towing package. Since I dont tow, or carry heavy loads,I believe that I dont really need the oil cooler. Heaviest work is plowing my driveway and it is always cold when it is snowing.

 
CDAUSA 
Needs to Get Out More Member
Posts: 12906

Loc: Texas Panhandle
Reg: 12-31-01
01-30-08 12:21 PM - Post#1354577    
    In response to camaro865

  • camaro865 Said:
i'll fix it for 600 bucks



All day long

 
Bad Bowtie 
Valued Contributor
Posts: 4536
Bad Bowtie
Age: 42
Loc: TX
Reg: 07-04-03
01-30-08 02:17 PM - Post#1354658    
    In response to CDAUSA

Dorman was the brand I meant to say.
GMC. We are Professional Grade.

http://www.cardomain.com/id/2004VHO


 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-30-08 02:38 PM - Post#1354673    
    In response to CDAUSA

Okay here's the bottom line on parts. Needs new oil filter adapter housing, $147.56, retainer ring, $4.42, complete hose assembly, which totals $87.67, and two T-flange kits, $38.36 and $48.42. So I'm in for parts totaling $322, another $200 labor, plus oil change and the job totals $550.

With the 4wheel drive trucks, the oil filter adapter locates the filter away from the axle and that's why it can't be bypassed on these models. Having the oil cooled is a good idea even if you don't tow or use the vehicle in HD use as it helps extend oil life and prevent sludge formation. The built in oil cooler was standard equip and there was a HD option available that actually put the oil cooler in front of the radiator.

If I could have planned ahead, I'm sure I could have saved myself some money but this situation caught me by surprise. The lesson here for others, is the oil filter adapter and cooler lines should definately be considered a maintenance item and should be inspected regularly for signs of wear and replaced accordingly, as needed. Especially if you live in a northern state.

Considering my truck is 15yrs old w/135K miles I guess I can't complain.

Someotherguy, It gets hot here in the summer and humid too. We had a 60+ degree day earlier in Jan and yesterday was mid 40's. Overnight a storm blew in out of the northwest and we're back to full blown winter. That's Michigan. Thanks for the help guys.


 
someotherguy 
Moderator
Posts: 25571
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
01-30-08 03:41 PM - Post#1354718    
    In response to Axelrod

  • Axelrod Said:
With the 4wheel drive trucks, the oil filter adapter locates the filter away from the axle and that's why it can't be bypassed on these models.


That, I did not know, but I started to suspect it after what you'd said earlier. Sorry to hear it.

  • Quote:
Someotherguy, It gets hot here in the summer and humid too. We had a 60+ degree day earlier in Jan and yesterday was mid 40's. Overnight a storm blew in out of the northwest and we're back to full blown winter. That's Michigan. Thanks for the help guys.


That ain't hot! C'mon down here to SE TX, you'll melt!

Seriously, good luck with the repair. I do agree that the oil cooler lines are a bit of a drag; they don't seem to last very long. Do keep in mind what CDAUSA has mentioned about his Dorman brand lines; they sound like they're outlasting some of the OEM lines others here have installed in recent past.

Richard
94 C2500LD / 94 C1500 / 06 300C SRT8
Check out my truck shop projects


 
877fullpower 
Member
Posts: 8

Reg: 01-30-08
01-30-08 03:59 PM - Post#1354731    
    In response to Axelrod

Shoot me your vin # to dwittlinger@fredbeans.com and I'll get you the prices

 
scrambldcj8 
Senior Member
Posts: 1698

Loc: MA
Reg: 04-06-03
01-30-08 06:39 PM - Post#1354886    
    In response to 877fullpower

I had just done this repair on my 1994 K Blazer this past summer. I too used Dorman's and have had no problems to date. It was an easy job, maybe an hour or two. I did the lines and I also did the filter housing O-rings while I was in to it.
That just sounds like an absurd amount of money for this job. The third price might be for the oil filter adapter O-ring kit.....all the prices sound to be jacked though....?

 
docs89gta 
Contributor
Posts: 232

Age: 43
Loc: Georgia
Reg: 10-18-07
01-30-08 06:47 PM - Post#1354895    
    In response to scrambldcj8

I almost didn't want to post this, but i just picked up both lines, upper and lower oil cooler lines, the gasket set, 3 quarts of oil and some grease for something else, and i only spent $60. I am going to do this myself of course. O'Reilly Auto parts had both lines in stock and the gasket set.
95 Chevy Z71, 89 Pontiac Trans Am GTA, 75 Chevy Nova LN (sold)


 
59 EWW 
Very Senior Member
Posts: 1871
59 EWW
Loc: Kansas City Kansas
Reg: 08-31-03
01-30-08 07:10 PM - Post#1354917    
    In response to Axelrod

Someones feeding you BS, when I put the new motor in my 97 (4X4), I did not put the oil filter adapter and cooler lines back in for a month.

I installed a 2 bolt normal oil filter adapter on the block, screwed on a vertical filter, and ran it for the first 500 miles.

The filter adapter cost about $35. at the GM dealer, I forget what the filter number was.

Now that I think about, the reason I had the standard oil filter setup on the motor was, you have to have a filter on the motor, when your priming the oil system on a engine stand.
Ernie

59 Biscayne 2dr
65 Elcamino
97 Z71,K1500,5.7
06 GMC Canyon


 
Axelrod 
Senior Member
Posts: 876

Reg: 02-23-04
01-31-08 02:31 PM - Post#1355434    
    In response to 59 EWW

  • 59 EWW Said:
Someones feeding you BS, when I put the new motor in my 97 (4X4), I did not put the oil filter adapter and cooler lines back in for a month.

I installed a 2 bolt normal oil filter adapter on the block, screwed on a vertical filter, and ran it for the first 500 miles.



Did you run the truck in 4wheel while you had the standard oil filter setup?

When I brought it in that's what the mechanic on duty told me, or at least that's how I understood it to be.

The boss had already gone home for the day. The next morning he estimated worst case approximate, that was my first post. When I got the call I was driving into work so I wasn't taking notes.

To be clear the oil leak was around the adapter, which I think has a built in gasket. That was the most expensive part ($147.56) and I got the original back. It wasn't corroded like I stated earlier. Everything on the truck was original, including the lines, which were weeping some but didn't have a wholesale leak. It was suggested that everything should be replaced at the same time and I agreed. So the whole oil cooling system is now new with the exception of the radiator, and everything is OEM GM. Not sure about aftermarket lines but the GM stuff comes as one intergral piece, hard and soft, and includes the guards. That may account for some of the diff in costs against aftermarket.



 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
01-31-08 04:04 PM - Post#1355500    
    In response to Axelrod

Here is a different view. On my GTA, there is a factory installed oil cooler. With the oil cooler, you have to use the short and wide PF-25 filter. If you use the standard PF-35, the bottom of the filter is just about as low as the sump on the oil pan. Not a desirable consition. On my 4wd 94 truck, I believe that the short/wide filter would interfere with the driveshaft that goes from the transfer case to the front axle. To eliminate any interference, they built the oil cooler adapter so that the filter is horizontal and above the driveshaft. This also eliminates the possibility of the filter being lower than the pan sump. Just a thought.

 
59 EWW 
Very Senior Member
Posts: 1871
59 EWW
Loc: Kansas City Kansas
Reg: 08-31-03
01-31-08 09:49 PM - Post#1355772    
    In response to Axelrod

No I did not run it in 4 wheel drive, But, I could of without any interference from the front driveshaft, and I did use a long large diameter filter.
Granted it was close to the front driveshaft, but no worries, unless you have bad u-joints on the front shaft.
Ernie

59 Biscayne 2dr
65 Elcamino
97 Z71,K1500,5.7
06 GMC Canyon


 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
02-01-08 12:18 PM - Post#1356127    
    In response to 59 EWW

Do you by any chance have the part number for the standard filter adapter? Is it the same as the car? Since I dont have the cooler lines, I am thinking of just getting the standard adapter. I have a 1989 305 in a parts car and if the adapter is the same, I can switch the parts over to my truck.

 
someotherguy 
Moderator
Posts: 25571
someotherguy
Age: 44
Loc: Texas
Reg: 08-01-03
02-01-08 01:08 PM - Post#1356151    
    In response to george88gta

Don't know the part #, but it'll swap right over. Get the adapter and the two bolts that hold it in.

Richard
94 C2500LD / 94 C1500 / 06 300C SRT8
Check out my truck shop projects


 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
02-01-08 02:30 PM - Post#1356209    
    In response to someotherguy

Thanks, Richard. As soon as the weather gets a bit warmer, I will crawl under that 89 and remove the parts.

 
59 EWW 
Very Senior Member
Posts: 1871
59 EWW
Loc: Kansas City Kansas
Reg: 08-31-03
02-01-08 09:32 PM - Post#1356538    
    In response to george88gta

Yeah, what Richard said, any 2 bolt adapter from a small block or big block will work.
Ernie

59 Biscayne 2dr
65 Elcamino
97 Z71,K1500,5.7
06 GMC Canyon


 
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