My 99 V-10 has a mere 59,000 miles on it and at every oil change(2000 miles), it's about 1 1/2qt low. Using Motorcraft 5W-30 and this engine doesn't leak a drop. This engine has not been abused and never modified. Only once in awhile will I pull a trailer, other than that, it's back and forth to work. Are all V-10's like this or do I have a "bummer"?

 

I would say it must be a V10 "feature" - My '02 V10 also comes up about 1 qt. short on my oil changes. And I change every 3K miles, not a single leak from anything and not alot of heavy towing... Go figure...?!?

 

If you have a little time on your hands, do a search in this forum where you can find some causes.

BTW - have you checked the little 90 degree elbow at your throttle body that connects to the PCV on the passenger side? Those things are made from "gum" rubber (it seems) and fails about 55 to 60K. It doesn't allow your engine to breathe well and could be part of the problem.

 

My truck also seemed to be using a little oil in the beginning, maybe a quart low at each change. Now with almost 90,000 miles on the odo, she seems to be using less. I know this is backwards. I'm using Mobil 1 10W-30 and changing it between 3000-5000 miles.

Go figure

Mark

 

Yep, my 01 is the same way.

What kind of oil are we all using, mine is Mobile1 synthetic.

 

I'm using a little over 2 quarts of 10W-30 dino Pennzoil between 3000 mile changes with 93,000 miles on the clock. I bought the truck from a used truck dealer who had 4 of them and said they were ranch foremen trucks from Oklahoma. In previous threads on this subject most posters (postees?) cited no usage, so, because my truck had been maintained by a Ford dealer and I couldn't see any obvious causes I was inclined to attribute the oil usage to ranch dust that may have gotten through the air filter causing some ring wear. These posts make me feel a little better, perhaps it's not the rings and it will stay where it is and not get worse. I can live with the 2 quarts versus a re-ring job or an engine. Thanks for the hope.

 

My 01 has always used 1 to 1-1/2 quarts every 3,000 miles. Dealer says that is common for V-10's. No leaks, but the occasional big cloud of blue smoke on start up. That is probably where the oil goes.