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Blown Oil Line

R

Rodd

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Location
Antelope, CA
After I got my fuel leak fixed on the Suburban I took my truck and trailer to do a job. While climbing a 5% 3/4 mile grade at 50 mpg in 3rd gear my oil line blew and smoke behind me and coming up through the gaps in the hood. Pulled over right away and oil was everywhere. I could see it leaking down right where the oil filter is. The coolant temp was at 210 degrees F when it happened. I did do a dual oil filter bypass last year and I'm hoping one of the hose clamps failed is all. The problem that worries me is when I walked to the passenger side there was H2O leaking right under the foot area of the passenger front seat. I don't know where it was coming from. The expansion tank is a potential cause but I didn't want to opening while hot. When you see water/coolant I thought crap did I blow a head gasket? I would think there would be oil and water mixed if that were the case, right? I looked down by both head gaskets and didn't see any water or oil. What do you guy's think. I will see what I can find after work tonight.
 
Fixed it. On the bypass plate that mounts to the original oil filter housing I have 2 barbs screwed into the plate with hoses that route to the back of the burb where the dual filters are. About 1 inch past one of the barbs the hose burst a 1 inch slice in the hose that sprayed all over. I cut about 2 inches off the hose and clamped it with a new bigger clamp. I see how it holds up. The hose is about a year old since I purchased it.
 
The blown hose is clearly not up to the job from age or wrong rating. Remove or replace it and hope loss of oil pressure didn't take bearings out. It's one thing to do a nice oil filter bypass, however, an engine runs longer on dirty oil than no oil at all!

Water on passenger floor inside may be clogged AC drain or heater core leak.
 
WarWagon said:
The blown hose is clearly not up to the job from age or wrong rating. Remove or replace it and hope loss of oil pressure didn't take bearings out. It's one thing to do a nice oil filter bypass, however, an engine runs longer on dirty oil than no oil at all!

Water on passenger floor inside may be clogged AC drain or heater core leak.
Click to expand...

The hose is what came in the kit. I was thinking of retro fitting the barbs with an fittings and using a steel braided hose like are in the aftermarket oil cooler kits that leroy sells.

Luckily I never lost oil pressure. After I had it towed home I checked the dip stick and it had about 1/2 inch on the end. It only took 2 1/2 quarts to top off.
 
Look for a temperature rating of the hose to be at least 350 degrees. I have overheated high quality hose (nevermind the oil as well) on aftermarket oil coolers and it then leaks at the connectors. Overheating of a hose rated for the pressure could cause it to split open.

Never hurts to check the hose routing for kinks or too close to the exhaust - wrap the exhaust with header wrap if it is.

Fingers crossed that it didn't do any damage and being a bypass vs. filter relocation your odds are good.
 
WarWagon said:
Look for a temperature rating of the hose to be at least 350 degrees. I have overheated high quality hose (nevermind the oil as well) on aftermarket oil coolers and it then leaks at the connectors. Overheating of a hose rated for the pressure could cause it to split open.

Never hurts to check the hose routing for kinks or too close to the exhaust - wrap the exhaust with header wrap if it is.

Fingers crossed that it didn't do any damage and being a bypass vs. filter relocation your odds are good.
Click to expand...

I do have a heat sleeve over both hoses to prevent over heating.
 
I have been looking online for silicon hoses and they all say they temp rating is to 428 degrees but they all say they are not suitable for oil or fuel transfer. So does oil degrade silicon?
 
If it's not rated for it then don't use it. It might spike the oil with silicone or react with additives. Look for oil rated hose with a good temperature. Example and 1/2" may be too small for an oil cooler. Gates 174-0008-0250 Synthetic Rubber, Hydraulic MegaTech 250 High-Temperature Transmission Oil Cooler Hose, Maximum Pressure: 250, -40 degrees F to 300 degrees F Temperature Range.

Temp rating is too low.
 
Steel braided line at least.

I get bypass not cooler lines but same task and importance.
The oil cooler hoses on hummers is hydraulic hoses. No hose barbs and clamps either- proper swivel connections. On pickups in the fleet when they got old we had a hydraulic shop make them for us. How frequent have we all heard and delt with GM hose failure? Hummer owners with 6.5 never even heard of oil cooler lines because they never heard of one blowing. Usually the engine lets loose and while it is out they go “oh, this old hose maybe should be replaced while I am at it.”

Kinda overkill and harder to work with than steel braided, but no kill like overkill. Stops outside heat intrusion and better wear over time.

Imo, yes to the an or jic type fittings. Eliminate hose clamps when or wherever possible. If you have to replace a critical hose anyways, perfect time to do it. Consider the added cost insurance and piece of mind. How much is that hose clamp? $2 and what does it cost if it fails? Screw that hose on instead of it screwing you. And when you have to remove and reinstall the hose, 50 times is just like the first for other repairs, No clamp replacement of end of hose being damaged. Good for decades not years.
 
I used hyd hoses for quite a few years without issue, they were double steel braided. I eventually got Leroy's hose replacements when I rebuilt my engine, a touch easier to route as they flex.
 
One of the new ones blew on Friday with the new expensive hose I bought. I took off the bypass kit and hooked up the stock filter. I never had an issue with it since I installed it a few months back. I just started towing a 3500 lb trailer for work and each time it blew I was towing. I am going to have to follow Will's advice and use hydraulic hose and fittings when and if I decide to hook it back up.
 
You are not trying to use the bypass as a full flow filter are you? Bypass keeps a stock style filter so maybe I am confused as to put stock back on?
 
WarWagon said:
You are not trying to use the bypass as a full flow filter are you? Bypass keeps a stock style filter so maybe I am confused as to put stock back on?
Click to expand...
I removed the 4x4 90 degree filter adapter, then put a plate with 2 barbs and ran 2 hoses from the barbs to the rear where I have a dual filter setup. I was tired of the oil from the filter changes draining onto the 4x4 drive line.
 
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