2000 Ford E350 7.3 I not sure were it goes? 10 quarts of oil 2 time now

What color is your exhaust? Also have you checked to make sure your drain plug is tight on the engine oil pan?

There are no leaks and no smoke

Giving a reddie because I asked for more information is uncalled for. Your question wasn't complete and couldn't be answered just on what was stated.


You need to do your own investigation to find out where the loss is occurring.

1) Do a wet and dry compression test and see how the rings are doing. That also will help in checking your valve guides.

These are the most common areas for oil to bypass.

2) check or change your PCV valve. If its stuck open it can be drawing oil directly into the intake.


3) remove the spak plugs (done dureing test 1) and examine them for oil either burned or unburned. Its hard to believe that if its going through the engine that at that level your not seeing anything at the exhaust. Have you been underneath the truck and looked around the front crank seal for leaks or for any evidence of a rear main leak?

I did look under it, you would think after 20 quarts you would see something big. I was told that if it is an injector oring it could return back in the fuel tank and be burned with no smoke?

Comment on califdadof3's post

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I did look under it, you would think after 20 quarts you would see something big. I was told that if it is an injector oring it could return back in the fuel tank and be burned with no smoke?


That is not my understanding. An injector O-ring is for sealing the injector to the cylinder. Also you would have a misfire under those conditions. Lets face it 20 quarts of oil is 5 gallons. You would have noticed the gauge going backwards. That's a huge amount of oil in a standard engine.

HowStuffWorks "How Fuel Injection Systems Work" (http://auto.howstuffworks.com/fuel-injection3.htm)