how much is to much

[Fast_Frank]

i changed my oil today and i checked it before i did it and seen i was 1qt low i had about 4200 mi on the oil change.
my question is, that a large amount of oil to have burned because i have no leaks

thanks

[4everlearning]

Not at all. 1 qt per oil change isnt all that uncomon.

[bigwhite7.3stroker]

Have you done the CCV Mod the factory one will suck a good amount of oil through the Intercooler and Turbo that was where some of mine was going

[Farmboy444]

yeah i add between 1 to 3 quart between changes 6000 miles, just driving 1 qt but if i tow none stop ill add closer to 3, ive been told that its not bad at all. Good Motors

[Farmboy444]

whats the CCV?

[AFBLUE]

Crank Case Vent, connected between driver side valve cover to intake tube about 8 inches upstream of the turbo.

[Farmboy444]

i have offend wondered why they routed that back into the intake tube, whats the CCV mod? keep in mind y'all have new body styles and i have a obs, as far as i know the 7.3 where basically unchanged. I have a decent bit of knowledge on diesel engines, but with all the brain power around here, you can find the answer to any question, I love this place

[Fast_Frank]

i do see quite abit of oil residue around the vent, i wondered if the turbo would suck oil throught it i guess it does, i will look into the ccv mod
thanks for all the input

[AFBLUE]

I have an OBS myself but I have a revised Ford intake which replaces the original aluminum piece and orange boot with a longer black rubber boot and a cast plastic piece that has a different CCV inside of it to prevent the oil siphoning into the intake. The reason they have the CCV connected to the intake is to vent crank case pressure, and its easier to connect to the intake since its a filtered location instead of installing a mini filter on it, plus the intake draws a slight vaccuum for that excess crank case pressure, downside is oil splashing in the intake.

[Triflex]

My 7.3 owners guide reads If your engine uses no more than 1 qt. in 1000 mi. it is in decent shape, however if it uses 1 qt in 700 mi. or less then the engine must be checked etc.