Oil Comsuption?
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
I am new Ford Truck owner and have a problem which none of the Ford technitians can answer.
I drove my 1990 F-250 460 on a 200 mile trip pulling a 26 ft trailer.
I drove apx 65mph. When I arrived I had used one quart of oil. (Which I felt was fine for a truck with 130,000 miles).
On the return trip, I drove at 55mph and when I reached my exit, the engine started making noise like the lifters were clackling. I went on home about another 10 miles. I checked the oil and found that it did not even register on the dipstick. I saw no smoke during the trip and found no evidence of leaking.
When I refuel I always check the oil and find it uses apx one quart every other fill up.
I have no engine fouling.
I replace the PVC and it seems to be working fine.
I can not find any solution to the delemna and would take any suggestions anyone might have about this.
Thanks:
I drove my 1990 F-250 460 on a 200 mile trip pulling a 26 ft trailer.
I drove apx 65mph. When I arrived I had used one quart of oil. (Which I felt was fine for a truck with 130,000 miles).
On the return trip, I drove at 55mph and when I reached my exit, the engine started making noise like the lifters were clackling. I went on home about another 10 miles. I checked the oil and found that it did not even register on the dipstick. I saw no smoke during the trip and found no evidence of leaking.
When I refuel I always check the oil and find it uses apx one quart every other fill up.
I have no engine fouling.
I replace the PVC and it seems to be working fine.
I can not find any solution to the delemna and would take any suggestions anyone might have about this.
Thanks:
Elder User
Joined: Feb 2002
Posts: 755
Likes: 1
From: Campbell, California
Oil Comsuption?
Leaky valve cover? 
Put some newspaper under the engine after driving and check it after a few hours. If a seal or valve cover is leaking, it should leave a few drops on the newspaper.
Put some newspaper under the engine after driving and check it after a few hours. If a seal or valve cover is leaking, it should leave a few drops on the newspaper.
Thread Starter
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
Thanks for your reply, BUT, I have NO leaks. I find NO oil under the truck and no evidence that any has ever leaked.
When I returned on my trip if found no traces that any oil leaked out and no evidence that I burned it. It just "disappeared". (Or so seems.)
When I returned on my trip if found no traces that any oil leaked out and no evidence that I burned it. It just "disappeared". (Or so seems.)
Senior User
Joined: Mar 2002
Posts: 131
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From: Mountain Home USA
Oil Comsuption?
Sometimes smoke is not evedint in a engine that used, get some sheetrock and set behind the muffeler, rev the engine no more than what u would run it on the road at. check for oil spotting on the sheet rock, the exhaust should spray it out on rev. Also check your coolant for evidence of oil in your over fill tank (if you have one) if not rig one up drive it some and see if you find oil there, if you do the you could have an internal oil leak in ur block or colling system somewhere
Randy - Just another Ford Lover
Randy - Just another Ford Lover
Elder User
Joined: Aug 2000
Posts: 763
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From: home
Oil Comsuption?
When was the last time your PVC was checked & replaced? Seen a bad PVC or brand X PVC cause this in engines. Motor Craft PVCS only cost a few dollars. A bad PVC can cause your oil consumption to go from a quart every 2 k miles to 4oo miles. 
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
Thanks for the info, I did put in a new pcv, but I used one I bought at "Wally's World" (Wal-Mart). I suspected the Pcv, but wasn't sure if it would make that much difference. I will get a "Ford" part and try it intead.
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
Thanks for responding,
I did check the oil for water and the reserve water tank, NOTHING.
I will try the sheet rock experiment and see if I get any oil splatters. I checked the inside of the exhaust pipe and found no oil there.
I did check the oil for water and the reserve water tank, NOTHING.
I will try the sheet rock experiment and see if I get any oil splatters. I checked the inside of the exhaust pipe and found no oil there.
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Elder User
Joined: Jun 1999
Posts: 861
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From: SE PA
Oil Comsuption?
I'll throw this out for what it's worth, make sure the PCV system is sealed as well as your oil filler in the valve cover. Can't think of any place else it could be going except into the air as vapor when running at speed/load. Got yourself a real brain teaser you do! Sorry can't be more helpful.
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Thread Starter
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
Thanks for your help, I believe the problem to be somewhere in the PCV area. The filler cap is the original equipment and it turns until it clicks. I checked the PCV when the engine was idling and it seems to have good suction. It seems to act like the PCV. I work in a Chevrolet dealership and the trucks that come in with excessive oil comsuption it is related to that. I will try any thing as I have a long trip coming up and would like to solve this before I go. I tried to talk with the Ford dealership, but they want me to bring in the truck so they can "charge" me look at it. I am not stupid when it comes to working on my vehicle and cannot justify the extra cost if I can solve it myself. (or with help from other people like yourself) Thanks for replying
Elder User
Joined: Aug 2000
Posts: 763
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From: home
Oil Comsuption?
On the PCV I would replace it asap with the Ford one. All it takes is the PCV internal spring that is not up to Ford Specs to cause problems. Mine all seemd to open and suck ok, but at what pressure is hard to judge.One of mine was brand new NAPA and it caused me to use oil like crazy. Some more words. 
New User
Joined: Nov 2001
Posts: 17
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From: Monroe USA
Oil Comsuption?
Well, I had a similar problem on my Ranger...The oil pressure sending unit is well hidden on my 2.3L and had a steady drip. the oil ran back onto the clutch housing but I never saw any leak.
Problem solved after a new sending unit was intstalled...
Problem solved after a new sending unit was intstalled...
New User
Joined: Nov 2001
Posts: 15
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Oil Comsuption?
rob8,
This past summer, I rebuilt the 302 in my 83 Bronco. After the rebuild, I was using about a quart of oil every 400-500 miles. I was stumped as to where the oil was going. I finally noticed oil on the front of my oil pan. It ended up being caused by a worn harmonic balancer. I learned from my trusted auto parts store about a harmonic balancer repair sleeve that fits over the the worn ring on the shaft, and now I use a quart between oil changes.
I wish I had known about this trick when the engine was still on the engine stand.
C. Davis
This past summer, I rebuilt the 302 in my 83 Bronco. After the rebuild, I was using about a quart of oil every 400-500 miles. I was stumped as to where the oil was going. I finally noticed oil on the front of my oil pan. It ended up being caused by a worn harmonic balancer. I learned from my trusted auto parts store about a harmonic balancer repair sleeve that fits over the the worn ring on the shaft, and now I use a quart between oil changes.
I wish I had known about this trick when the engine was still on the engine stand.
C. Davis
Thread Starter
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New User
Joined: Mar 2002
Posts: 8
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From: Twin Falls USA
Oil Comsuption?
Maybe to help you out, I have been doing some extra research.
When I am running the engine, I tried reving it several times (curb side) and found it started puffing smoke. When I discussed this with a mechanic he said my oil rings are shot. He also said under normal driving conditions I would not see any smoke, but it would be burning oil
I didn't want to hear that. I am looking into a short block or having the rings replaced. Both are costy.
Maybe you and I should get together and cry over a "beer".
Thanks
Rob
When I am running the engine, I tried reving it several times (curb side) and found it started puffing smoke. When I discussed this with a mechanic he said my oil rings are shot. He also said under normal driving conditions I would not see any smoke, but it would be burning oil
I didn't want to hear that. I am looking into a short block or having the rings replaced. Both are costy.
Maybe you and I should get together and cry over a "beer".
Thanks
Rob