What Oil & Filter?
Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
Regarding oil loss; I did an oil change a few weeks ago with Mobil 1 full synthetic 5W20, and I checked it exactly 1,000miles later. It was about a quart low.
Exactly another 1,000miles later checked it again, and it was a quart low again. Both times I added Mobil 1 full synthetic 5W20.
I guess these engines just sip some black gold as a side item to guzzling gasoline.
Moderator
Joined: May 2004
Posts: 6,521
Likes: 919
From: Home Base Nebraska
I am currently experimenting with my V10 oil loss. For the last 9 months it seems I lose 3-5 quarts between oil changes. No smoke, no leaks, not in coolant.
I have been using Motorcraft 5-20 synthetic blend.
Last oil change I got full syn Mobil 1 5w20. I'll keep you posted.
I have been using Motorcraft 5-20 synthetic blend.
Last oil change I got full syn Mobil 1 5w20. I'll keep you posted.
Denny
Senior User
Joined: Jan 2008
Posts: 137
Likes: 0
Me Too!
I have a "thirsty for black gold" V10 in a 2005 Ex. I am see about a quart consumed every 1K miles too.
I replaced the PCV valve and PCV valve hose a couple weeks ago. The old PCV valve rattled, but not as freely as the new one. I could also blow both directions on the old but not the new one. It has not changed the oil consumption. I have not removed and inspected the hose on the drivers side valve cover but I do not see any oil resdue on the valve cover like I did on the valve cover w/the PCV valve.
What needs to be looked at in regards to the oil fill cap?
I think its unrelated, but can an exhaust leak due to broken manifold studs cause this?
I cannot see anything else wrong...no spotting on the driveway, no excessive smoke, no oil in the coolant/coolant in the oil, engine runs strong, no weird noises, IDK...this is getting old! These engines should not be using this much oil.
Does my V10 need a valve job or replace heads?
Getting frustrated...
rvpuller (AKA Denny)
What I would do is check all the oil vapor recovery system, start with the PCV valve and then the hose that is connected opposite valve cover and oil fill cap. Make sure it can draw no outside air, so you have to check all the fittings and hoses.
What I would do is check all the oil vapor recovery system, start with the PCV valve and then the hose that is connected opposite valve cover and oil fill cap. Make sure it can draw no outside air, so you have to check all the fittings and hoses.
What needs to be looked at in regards to the oil fill cap?
I think its unrelated, but can an exhaust leak due to broken manifold studs cause this?
I cannot see anything else wrong...no spotting on the driveway, no excessive smoke, no oil in the coolant/coolant in the oil, engine runs strong, no weird noises, IDK...this is getting old! These engines should not be using this much oil.
Does my V10 need a valve job or replace heads?
Getting frustrated...
Moderator
Joined: May 2004
Posts: 6,521
Likes: 919
From: Home Base Nebraska
The oil cap has a seal on it to stop air from being pulled into the crankcase also check and make sure the dip stick is sealed.
The crankcase ventilation system works by pulling a vacuum on the crankcase under load to draw any oil vapor back into the motor caused by compresion leakage or blow by and burning it instead of it venting into the atmosphere. If air can be pulled in anywhere else it will cause normal oil vapor in the motor to be pulled into the pcv valve and burned, the tube going into the left valve cover balances the system because of where it's connected to the air intake tube.
If you want a fast and easy way to check and see if your oil consumption is from engine wear, with a warm motor remove the oil filler cap, block the wheels, set the emergency brake, put the transmission into gear and step on the gas. If you get a large amount of oil vapor coming out of oil fill under load the rings are allowing compression into the crankcase, time for a rebuild.
Denny
Denny
The crankcase ventilation system works by pulling a vacuum on the crankcase under load to draw any oil vapor back into the motor caused by compresion leakage or blow by and burning it instead of it venting into the atmosphere. If air can be pulled in anywhere else it will cause normal oil vapor in the motor to be pulled into the pcv valve and burned, the tube going into the left valve cover balances the system because of where it's connected to the air intake tube.
If you want a fast and easy way to check and see if your oil consumption is from engine wear, with a warm motor remove the oil filler cap, block the wheels, set the emergency brake, put the transmission into gear and step on the gas. If you get a large amount of oil vapor coming out of oil fill under load the rings are allowing compression into the crankcase, time for a rebuild.
Denny
Denny
Moderator
Joined: May 2004
Posts: 6,521
Likes: 919
From: Home Base Nebraska
Denny
Bleed Ford Blue
Joined: Apr 2009
Posts: 13,578
Likes: 157
From: Anchorage Alaska
i run mobile 1 full synthetic and motorcraft filters in all my V10's (two previous) and my current one. i switched this truck over at 100k and now at 134k i change every 5-6k miles with about 1.5-2qt loss over that time (estimated) since i check it often and top it off a little at a time.
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Thread Starter
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Junior User
Joined: Mar 2014
Posts: 61
Likes: 0
To update I lost 2 QTs of Motorcraft Synthetic blend so far thats 1 week & around 200 - 300 miles. So the Motorcraft is faring no better or worse than the Mobil 1. Didn't get to pull spark plugs or do a compression test yet. PCV Valve was changed a month ago. Checked drivers side valve cover hose. It had some oil & fuel residue in it. Gonna order a replacement & see how that does.
Thread Starter
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Junior User
Joined: Mar 2014
Posts: 61
Likes: 0
Sounds like we are in the same boat. Check the crankcase breather hose. Mine showed little signs of oil too. But when I pulled It there was oil on the barb. I' gonna change oil fill cap, dipstick, & crankcase breather hose, and see what that does. The parts are cheap so it worth a shot.
Fleet Mechanic
Joined: Jul 2010
Posts: 1,509
Likes: 116
From: St James, Missouri
Make sure to install a Motorcraft or other pcv valve specific to your application. I have seen consumption issues caused by some of the parts store/walmart pcv's that are listed as correct because they fit in the hole. Not sure if they were junk out of the box or just built different somehow.
Thread Starter
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Junior User
Joined: Mar 2014
Posts: 61
Likes: 0
Make sure to install a Motorcraft or other pcv valve specific to your application. I have seen consumption issues caused by some of the parts store/walmart pcv's that are listed as correct because they fit in the hole. Not sure if they were junk out of the box or just built different somehow.
Thread Starter
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Junior User
Joined: Mar 2014
Posts: 61
Likes: 0
So as a update I ordered the parts I mentioned earlier from FordParts.com. Looking like 3-8 Days to come in. Today I noticed that my exhaust still does not show any smoke white or black, but the exhaust terminates right before the passenger side rear axle, and my once white & red shock is now black. The exhaust tip had what looked to be a little oil on the tip. Doesn't seem like the oil is being burnt in the cylinder (like bad piston rings or such.) But is being lost thorough the exhaust.... Hoping that the change of the crankcase breather hose will remedy this since it goes from the drivers side valve cover to the air intake of the throttle. Still this is making me nervous...