Oil Consumption and poor MPG and power

[sjp649]

Hi all,

99.5 crew cab 4x4 long bed. Stock turbo, and injectors except for #8 was replaced a year ago. 4" exhaust from the turbo, tymar intake. Twice in the last 6 months the truck has died going down the road. Both times the stick didn't show any oil. The last time, I added 2 gallons of oil after 3,000 miles since the last oil change. Rotella 15w40, and it was full. Drained some fuel this morning, it was clear, no oil in it. Valley is not full of oil, there is a very little bit in one of the voids. No oil leaks under the truck. Exhaust is just dry soot, no oily mess. The compressor wheel is dry and does not have any play. Pulled the intercooler hose off of the left side of the turbo, it was dry, no oil at all.
Also, my power just does not seem to be there anymore. I do run a DP tuner at the 80 hp econ, and the 60hp tow when I pull my 5th wheel. Camper is 10k unloaded. Used to pull it with no problem, no she has a hard time staying at 65mph. Florida driving, no hills, no winter blend fuel. Also, my mileage has gone down, I used to get around 16 mpg, not I'm lucky to get 13.
Thanks for any help you can provide, and sorry for the long writing.

[ianstew]

Injectors or o rings. That's my bet. Take your feul filter cap off and see if the filter has oil in it.

[sjp649]

Originally Posted by ianstew

Injectors or o rings. That's my bet. Take your feul filter cap off and see if the filter has oil in it.

Yeah, I already did that and the fuel is perfectly clean, no codes either

[ianstew]

Then I would say injectors. There's only so many places foe the oil to go. I think the only way to test if the injectors are allowing oil to get by is to pull them and test them on a bench with some sort of testing apparatus. Maybe atech will chime in on this one.

[sjp649]

Anyone else have any input?

i would also say its the injectors with no leakes being seen.

[sjp649]

Something just came to me, I had a #8 injector go bad about 6 months ago. When I was replacing it, I noticed that the one that came out was a AB and the one I was putting was an AD or vice a versa(can't remember) That injector has since been noisier than before. Could this have any thing to do with it. I called the place I got it from and they said they would not take it back, and that it would be ok.

[sjp649]

Well the truck died today driving down the road and would not restart. Had it towed in to the shop. The socks in the tank on the pump are clogged and burnt out the pump on the rail....Got to love it. Once they get it running, they are going to look into the oil consumption issue.